diff --git a/app/Actions/Fortify/UpdateUserProfileInformation.php b/app/Actions/Fortify/UpdateUserProfileInformation.php
index ccc2a496..4bd09c0d 100644
--- a/app/Actions/Fortify/UpdateUserProfileInformation.php
+++ b/app/Actions/Fortify/UpdateUserProfileInformation.php
@@ -5,9 +5,12 @@ declare(strict_types=1);
 namespace App\Actions\Fortify;
 
 use App\Enums\Weekday;
+use App\Mail\VerifyUpdatedEmailMail;
 use App\Models\User;
 use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Support\Facades\Mail;
 use Illuminate\Support\Facades\Validator;
+use Illuminate\Support\Str;
 use Illuminate\Validation\Rule;
 use Illuminate\Validation\ValidationException;
 use Korridor\LaravelModelValidationRules\Rules\UniqueEloquent;
@@ -24,6 +27,10 @@ class UpdateUserProfileInformation implements UpdatesUserProfileInformation
      */
     public function update(User $user, array $input): void
     {
+        if (isset($input['email']) && is_string($input['email'])) {
+            $input['email'] = Str::lower($input['email']);
+        }
+
         Validator::make($input, [
             'name' => [
                 'required',
@@ -58,16 +65,17 @@ class UpdateUserProfileInformation implements UpdatesUserProfileInformation
             $user->updateProfilePhoto($input['photo']);
         }
 
-        if ($input['email'] !== $user->email) {
+        $email = Str::lower((string) $input['email']);
+
+        if ($email !== Str::lower($user->email)) {
             $user->forceFill([
                 'name' => $input['name'],
-                'email' => $input['email'],
-                'email_verified_at' => null,
+                'pending_email' => $email,
                 'timezone' => $input['timezone'],
                 'week_start' => $input['week_start'],
             ])->save();
 
-            $user->sendEmailVerificationNotification();
+            Mail::to($email)->send(new VerifyUpdatedEmailMail($user, $email));
         } else {
             $user->forceFill([
                 'name' => $input['name'],
diff --git a/app/Exceptions/Api/UserResendEmailVerificationNoPendingEmailApiException.php b/app/Exceptions/Api/UserResendEmailVerificationNoPendingEmailApiException.php
new file mode 100644
index 00000000..ef8d442a
--- /dev/null
+++ b/app/Exceptions/Api/UserResendEmailVerificationNoPendingEmailApiException.php
@@ -0,0 +1,10 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Exceptions\Api;
+
+class UserResendEmailVerificationNoPendingEmailApiException extends ApiException
+{
+    public const string KEY = 'user_resend_email_verification_no_pending_email';
+}
diff --git a/app/Http/Controllers/Api/V1/ApiTokenController.php b/app/Http/Controllers/Api/V1/ApiTokenController.php
index 1fbf12d8..4cbb3cc9 100644
--- a/app/Http/Controllers/Api/V1/ApiTokenController.php
+++ b/app/Http/Controllers/Api/V1/ApiTokenController.php
@@ -20,7 +20,7 @@ class ApiTokenController extends Controller
     /**
      * List all api token of the currently authenticated user
      *
-     * This endpoint is independent of organization.
+     * This endpoint is independent of the organization.
      *
      * @operationId getApiTokens
      *
diff --git a/app/Http/Controllers/Api/V1/UserController.php b/app/Http/Controllers/Api/V1/UserController.php
index f835cbb7..2ddc0e3f 100644
--- a/app/Http/Controllers/Api/V1/UserController.php
+++ b/app/Http/Controllers/Api/V1/UserController.php
@@ -5,18 +5,25 @@ declare(strict_types=1);
 namespace App\Http\Controllers\Api\V1;
 
 use App\Exceptions\Api\CanNotDeleteUserWhoIsOwnerOfOrganizationWithMultipleMembers;
+use App\Exceptions\Api\UserResendEmailVerificationNoPendingEmailApiException;
+use App\Http\Requests\V1\User\UserUpdateRequest;
 use App\Http\Resources\V1\User\UserResource;
+use App\Mail\VerifyUpdatedEmailMail;
 use App\Models\User;
 use App\Service\DeletionService;
+use App\Support\Base64File;
 use Illuminate\Auth\Access\AuthorizationException;
 use Illuminate\Http\JsonResponse;
+use Illuminate\Support\Facades\Mail;
+use Illuminate\Support\Facades\Storage;
+use Illuminate\Support\Str;
 
 class UserController extends Controller
 {
     /**
      * Get the current user
      *
-     * This endpoint is independent of organization.
+     * This endpoint is independent of the organization.
      *
      * @operationId getMe
      *
@@ -29,10 +36,95 @@ class UserController extends Controller
         return new UserResource($user);
     }
 
+    /**
+     * Update the current user
+     *
+     * This endpoint is independent of the organization.
+     *
+     * @operationId updateUser
+     */
+    public function update(User $user, UserUpdateRequest $request): UserResource
+    {
+        if ($user->getKey() !== $this->user()->getKey()) {
+            throw new AuthorizationException;
+        }
+
+        if ($request->getPhoto() !== null) {
+            $photo = Base64File::decode($request->getPhoto());
+            assert($photo !== null);
+            $extension = Base64File::extension($photo['mime_type']);
+            assert($extension !== null);
+
+            $previousPhotoPath = $user->profile_photo_path;
+            $photoPath = 'profile-photos/'.Str::uuid().'.'.$extension;
+            $photoDisk = (string) config('jetstream.profile_photo_disk', 'public');
+
+            Storage::disk($photoDisk)->put($photoPath, $photo['data'], 'public');
+            $user->profile_photo_path = $photoPath;
+
+            if ($previousPhotoPath !== null) {
+                Storage::disk($photoDisk)->delete($previousPhotoPath);
+            }
+        }
+
+        $emailToVerify = null;
+        $email = $request->getEmail();
+        if ($email !== null && $email !== Str::lower($user->email)) {
+            $emailToVerify = $email;
+            $user->pending_email = $email;
+        }
+
+        if ($request->getName() !== null) {
+            $user->name = $request->getName();
+        }
+
+        if ($request->getTimezone() !== null) {
+            $user->timezone = $request->getTimezone();
+        }
+
+        if ($request->getWeekStart() !== null) {
+            $user->week_start = $request->getWeekStart();
+        }
+
+        $user->save();
+
+        if ($emailToVerify !== null) {
+            Mail::to($emailToVerify)->send(new VerifyUpdatedEmailMail($user, $emailToVerify));
+        }
+
+        return new UserResource($user);
+    }
+
+    /**
+     * Resend the pending email update verification email.
+     *
+     * This endpoint is independent of the organization.
+     *
+     * @operationId resendUserEmailVerification
+     *
+     * @throws AuthorizationException Thrown when the authenticated user does not match the user whose email is pending verification.
+     * @throws UserResendEmailVerificationNoPendingEmailApiException Thrown when the user does not have a pending email to verify.
+     */
+    public function resendEmailVerification(User $user): JsonResponse
+    {
+        if ($user->getKey() !== $this->user()->getKey()) {
+            throw new AuthorizationException;
+        }
+
+        if ($user->pending_email === null) {
+            throw new UserResendEmailVerificationNoPendingEmailApiException;
+        }
+
+        Mail::to($user->pending_email)
+            ->queue(new VerifyUpdatedEmailMail($user, $user->pending_email));
+
+        return response()->json(null, 204);
+    }
+
     /**
      * Handles the deletion of a user.
      *
-     * This endpoint is independent of organization.
+     * This endpoint is independent of the organization.
      *
      * @operationId deleteUser
      *
diff --git a/app/Http/Controllers/Api/V1/UserMembershipController.php b/app/Http/Controllers/Api/V1/UserMembershipController.php
index ea7a92a3..e1bb0ad0 100644
--- a/app/Http/Controllers/Api/V1/UserMembershipController.php
+++ b/app/Http/Controllers/Api/V1/UserMembershipController.php
@@ -14,7 +14,7 @@ class UserMembershipController extends Controller
     /**
      * Get the memberships of the current user
      *
-     * This endpoint is independent of organization.
+     * This endpoint is independent of the organization.
      *
      * @operationId getMyMemberships
      *
diff --git a/app/Http/Controllers/Api/V1/UserTimeEntryController.php b/app/Http/Controllers/Api/V1/UserTimeEntryController.php
index 7c69fce4..79cefecc 100644
--- a/app/Http/Controllers/Api/V1/UserTimeEntryController.php
+++ b/app/Http/Controllers/Api/V1/UserTimeEntryController.php
@@ -17,7 +17,7 @@ class UserTimeEntryController extends Controller
     /**
      * Get the active time entry of the current user
      *
-     * This endpoint is independent of organization.
+     * This endpoint is independent of the organization.
      *
      * @operationId getMyActiveTimeEntry
      */
diff --git a/app/Http/Controllers/Web/UserController.php b/app/Http/Controllers/Web/UserController.php
new file mode 100644
index 00000000..e2e4750a
--- /dev/null
+++ b/app/Http/Controllers/Web/UserController.php
@@ -0,0 +1,55 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Controllers\Web;
+
+use App\Models\User;
+use Illuminate\Http\RedirectResponse;
+use Illuminate\Http\Request;
+use Illuminate\Support\Carbon;
+use Illuminate\Support\Str;
+
+class UserController extends Controller
+{
+    public function verifyEmailChange(Request $request, User $user): RedirectResponse
+    {
+        if ($request->user()?->getAuthIdentifier() !== $user->getKey()) {
+            abort(403);
+        }
+
+        $email = $request->query('email');
+        if (! is_string($email)) {
+            abort(403);
+        }
+
+        $email = Str::lower($email);
+
+        if ($user->pending_email !== $email) {
+            abort(403);
+        }
+
+        $emailAlreadyInUse = User::query()
+            ->where('email', '=', $email)
+            ->where('is_placeholder', '=', false)
+            ->whereKeyNot($user->getKey())
+            ->exists();
+
+        if ($emailAlreadyInUse) {
+            return redirect(route('dashboard', [
+                'bannerStyle' => 'danger',
+                'bannerText' => __('The email address is already in use.'),
+            ]));
+        }
+
+        $user->email = $email;
+        $user->pending_email = null;
+        $user->email_verified_at = Carbon::now();
+        $user->save();
+
+        return redirect(route('dashboard', [
+            'bannerStyle' => 'success',
+            'bannerText' => __('Your email address has been updated successfully.'),
+        ]));
+    }
+}
diff --git a/app/Http/Requests/V1/User/UserUpdateRequest.php b/app/Http/Requests/V1/User/UserUpdateRequest.php
new file mode 100644
index 00000000..d9ef8b91
--- /dev/null
+++ b/app/Http/Requests/V1/User/UserUpdateRequest.php
@@ -0,0 +1,88 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Requests\V1\User;
+
+use App\Enums\Weekday;
+use App\Http\Requests\V1\BaseFormRequest;
+use App\Models\User;
+use App\Rules\Base64ImageRule;
+use Illuminate\Contracts\Validation\ValidationRule;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Support\Str;
+use Illuminate\Validation\Rule;
+use Korridor\LaravelModelValidationRules\Rules\UniqueEloquent;
+
+/**
+ * @property User $user User from model binding
+ */
+class UserUpdateRequest extends BaseFormRequest
+{
+    protected function prepareForValidation(): void
+    {
+        if ($this->has('email') && is_string($this->input('email'))) {
+            $this->merge([
+                'email' => Str::lower((string) $this->input('email')),
+            ]);
+        }
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array<string, array<string|\Illuminate\Contracts\Validation\Rule|ValidationRule>>
+     */
+    public function rules(): array
+    {
+        return [
+            'name' => [
+                'string',
+                'max:255',
+            ],
+            'email' => [
+                'email',
+                'max:255',
+                UniqueEloquent::make(User::class, 'email')->ignore($this->user->id)->query(function (Builder $query) {
+                    /** @var Builder<User> $query */
+                    return $query->where('is_placeholder', '=', false);
+                }),
+            ],
+            'photo' => [
+                'nullable',
+                new Base64ImageRule,
+            ],
+            'timezone' => [
+                'timezone:all',
+            ],
+            'week_start' => [
+                Rule::enum(Weekday::class),
+            ],
+        ];
+    }
+
+    public function getName(): ?string
+    {
+        return $this->has('name') ? (string) $this->input('name') : null;
+    }
+
+    public function getEmail(): ?string
+    {
+        return $this->has('email') ? Str::lower((string) $this->input('email')) : null;
+    }
+
+    public function getTimezone(): ?string
+    {
+        return $this->has('timezone') ? (string) $this->input('timezone') : null;
+    }
+
+    public function getWeekStart(): ?Weekday
+    {
+        return $this->has('week_start') ? Weekday::from($this->input('week_start')) : null;
+    }
+
+    public function getPhoto(): ?string
+    {
+        return $this->has('photo') ? (string) $this->input('photo') : null;
+    }
+}
diff --git a/app/Mail/VerifyUpdatedEmailMail.php b/app/Mail/VerifyUpdatedEmailMail.php
new file mode 100644
index 00000000..76552a19
--- /dev/null
+++ b/app/Mail/VerifyUpdatedEmailMail.php
@@ -0,0 +1,48 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Mail;
+
+use App\Models\User;
+use Illuminate\Bus\Queueable;
+use Illuminate\Mail\Mailable;
+use Illuminate\Queue\SerializesModels;
+use Illuminate\Support\Carbon;
+use Illuminate\Support\Facades\URL;
+use Illuminate\Support\Str;
+
+class VerifyUpdatedEmailMail extends Mailable
+{
+    use Queueable, SerializesModels;
+
+    public User $user;
+
+    public string $email;
+
+    public function __construct(User $user, string $email)
+    {
+        $this->user = $user;
+        $this->email = Str::lower($email);
+    }
+
+    /**
+     * Build the message.
+     */
+    public function build(): self
+    {
+        $verificationUrl = URL::temporarySignedRoute(
+            'users.verify-email-change',
+            Carbon::now()->addMinutes((int) config('auth.verification.expire', 60)),
+            [
+                'user' => $this->user->getKey(),
+                'email' => $this->email,
+            ],
+            false
+        );
+
+        return $this->markdown('emails.verify-updated-email', [
+            'verificationUrl' => URL::to($verificationUrl),
+        ])->subject(__('Verify Email Address'));
+    }
+}
diff --git a/app/Models/User.php b/app/Models/User.php
index 76c5115d..2b0f0bfe 100644
--- a/app/Models/User.php
+++ b/app/Models/User.php
@@ -36,6 +36,7 @@ use OwenIt\Auditing\Contracts\Auditable as AuditableContract;
  * @property string $id
  * @property string $name
  * @property string $email
+ * @property string|null $pending_email
  * @property Carbon|null $email_verified_at
  * @property string|null $password
  * @property string|null $two_factor_secret
@@ -105,6 +106,7 @@ class User extends Authenticatable implements AuditableContract, FilamentUser, M
     protected $casts = [
         'name' => 'string',
         'email' => 'string',
+        'pending_email' => 'string',
         'email_verified_at' => 'datetime',
         'is_admin' => 'boolean',
         'is_placeholder' => 'boolean',
diff --git a/app/Providers/FortifyServiceProvider.php b/app/Providers/FortifyServiceProvider.php
index 2006f452..a10d375b 100644
--- a/app/Providers/FortifyServiceProvider.php
+++ b/app/Providers/FortifyServiceProvider.php
@@ -17,6 +17,7 @@ use Illuminate\Support\Facades\Hash;
 use Illuminate\Support\Facades\RateLimiter;
 use Illuminate\Support\ServiceProvider;
 use Illuminate\Support\Str;
+use Inertia\Inertia;
 use Laravel\Fortify\Contracts\TwoFactorLoginResponse;
 use Laravel\Fortify\Fortify;
 use Laravel\Fortify\Http\Responses\LoginResponse;
@@ -41,6 +42,14 @@ class FortifyServiceProvider extends ServiceProvider
         Fortify::updateUserPasswordsUsing(UpdateUserPassword::class);
         Fortify::resetUserPasswordsUsing(ResetUserPassword::class);
 
+        Fortify::registerView(function () {
+            return Inertia::render('Auth/Register', [
+                'terms_url' => config('auth.terms_url'),
+                'privacy_policy_url' => config('auth.privacy_policy_url'),
+                'newsletter_consent' => config('auth.newsletter_consent'),
+            ]);
+        });
+
         Fortify::authenticateUsing(function (Request $request): ?User {
             /** @var User|null $user */
             $user = User::query()
diff --git a/app/Providers/JetstreamServiceProvider.php b/app/Providers/JetstreamServiceProvider.php
index cc8c3c96..5f51f00f 100644
--- a/app/Providers/JetstreamServiceProvider.php
+++ b/app/Providers/JetstreamServiceProvider.php
@@ -13,20 +13,18 @@ use App\Actions\Jetstream\RemoveOrganizationMember;
 use App\Actions\Jetstream\UpdateMemberRole;
 use App\Actions\Jetstream\UpdateOrganization;
 use App\Actions\Jetstream\ValidateOrganizationDeletion;
-use App\Enums\Role;
 use App\Enums\Weekday;
 use App\Models\Member;
 use App\Models\Organization;
 use App\Models\OrganizationInvitation;
 use App\Models\User;
+use App\Service\PermissionStore;
 use App\Service\TimezoneService;
 use Brick\Money\Currency;
 use Brick\Money\ISOCurrencyProvider;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Gate;
 use Illuminate\Support\ServiceProvider;
-use Inertia\Inertia;
-use Laravel\Fortify\Fortify;
 use Laravel\Jetstream\Actions\UpdateTeamMemberRole;
 use Laravel\Jetstream\Actions\ValidateTeamDeletion;
 use Laravel\Jetstream\Jetstream;
@@ -60,13 +58,6 @@ class JetstreamServiceProvider extends ServiceProvider
         Jetstream::useTeamInvitationModel(OrganizationInvitation::class);
         app()->singleton(UpdateTeamMemberRole::class, UpdateMemberRole::class);
         app()->singleton(ValidateTeamDeletion::class, ValidateOrganizationDeletion::class);
-        Fortify::registerView(function () {
-            return Inertia::render('Auth/Register', [
-                'terms_url' => config('auth.terms_url'),
-                'privacy_policy_url' => config('auth.privacy_policy_url'),
-                'newsletter_consent' => config('auth.newsletter_consent'),
-            ]);
-        });
         Gate::define('removeTeamMember', function (User $user, Organization $team) {
             return false;
         });
@@ -79,205 +70,10 @@ class JetstreamServiceProvider extends ServiceProvider
     {
         Jetstream::defaultApiTokenPermissions([]);
 
-        Jetstream::role(Role::Owner->value, 'Owner', [
-            'charts:view:own',
-            'charts:view:all',
-            'projects:view',
-            'projects:view:all',
-            'projects:create',
-            'projects:update',
-            'projects:delete',
-            'project-members:view',
-            'project-members:create',
-            'project-members:update',
-            'project-members:delete',
-            'tasks:view',
-            'tasks:view:all',
-            'tasks:create',
-            'tasks:create:all',
-            'tasks:update',
-            'tasks:update:all',
-            'tasks:delete',
-            'tasks:delete:all',
-            'time-entries:view:all',
-            'time-entries:create:all',
-            'time-entries:update:all',
-            'time-entries:delete:all',
-            'time-entries:view:own',
-            'time-entries:create:own',
-            'time-entries:update:own',
-            'time-entries:delete:own',
-            'tags:view',
-            'tags:create',
-            'tags:update',
-            'tags:delete',
-            'clients:view',
-            'clients:view:all',
-            'clients:create',
-            'clients:update',
-            'clients:delete',
-            'organizations:view',
-            'organizations:update',
-            'organizations:delete',
-            'import',
-            'export',
-            'invitations:view',
-            'invitations:create',
-            'invitations:resend',
-            'invitations:remove',
-            'members:view',
-            'members:invite-placeholder',
-            'members:change-ownership',
-            'members:make-placeholder',
-            'members:merge-into',
-            'members:update',
-            'members:delete',
-            'billing',
-            'reports:view',
-            'reports:create',
-            'reports:update',
-            'reports:delete',
-            'invoices:view',
-            'invoices:create',
-            'invoices:update',
-            'invoices:download',
-            'invoices:delete',
-            'invoice-settings:view',
-            'invoice-settings:update',
-        ])->description('Owner users can perform any action. There is only one owner per organization.');
-
-        Jetstream::role(Role::Admin->value, 'Administrator', [
-            'charts:view:own',
-            'charts:view:all',
-            'projects:view',
-            'projects:view:all',
-            'projects:create',
-            'projects:update',
-            'projects:delete',
-            'project-members:view',
-            'project-members:create',
-            'project-members:update',
-            'project-members:delete',
-            'tasks:view',
-            'tasks:view:all',
-            'tasks:create',
-            'tasks:create:all',
-            'tasks:update',
-            'tasks:update:all',
-            'tasks:delete',
-            'tasks:delete:all',
-            'time-entries:view:all',
-            'time-entries:create:all',
-            'time-entries:update:all',
-            'time-entries:delete:all',
-            'time-entries:view:own',
-            'time-entries:create:own',
-            'time-entries:update:own',
-            'time-entries:delete:own',
-            'tags:view',
-            'tags:create',
-            'tags:update',
-            'tags:delete',
-            'clients:view',
-            'clients:view:all',
-            'clients:create',
-            'clients:update',
-            'clients:delete',
-            'organizations:view',
-            'organizations:update',
-            'import',
-            'export',
-            'invitations:view',
-            'invitations:create',
-            'invitations:resend',
-            'invitations:remove',
-            'members:view',
-            'members:invite-placeholder',
-            'members:make-placeholder',
-            'members:merge-into',
-            'members:delete',
-            'members:update',
-            'reports:view',
-            'reports:create',
-            'reports:update',
-            'reports:delete',
-            'invoices:view',
-            'invoices:create',
-            'invoices:update',
-            'invoices:download',
-            'invoices:delete',
-            'invoice-settings:view',
-            'invoice-settings:update',
-        ])->description('Administrator users can perform any action, except accessing the billing dashboard.');
-
-        Jetstream::role(Role::Manager->value, 'Manager', [
-            'charts:view:own',
-            'charts:view:all',
-            'projects:view',
-            'projects:view:all',
-            'projects:create',
-            'projects:update',
-            'projects:delete',
-            'project-members:view',
-            'project-members:create',
-            'project-members:update',
-            'project-members:delete',
-            'tasks:view',
-            'tasks:view:all',
-            'tasks:create',
-            'tasks:create:all',
-            'tasks:update',
-            'tasks:update:all',
-            'tasks:delete',
-            'tasks:delete:all',
-            'time-entries:view:all',
-            'time-entries:create:all',
-            'time-entries:update:all',
-            'time-entries:delete:all',
-            'time-entries:view:own',
-            'time-entries:create:own',
-            'time-entries:update:own',
-            'time-entries:delete:own',
-            'tags:view',
-            'tags:create',
-            'tags:update',
-            'tags:delete',
-            'clients:view',
-            'clients:view:all',
-            'clients:create',
-            'clients:update',
-            'clients:delete',
-            'organizations:view',
-            'invitations:view',
-            'members:view',
-            'reports:view',
-            'reports:create',
-            'reports:update',
-            'reports:delete',
-            'invoices:view',
-            'invoices:create',
-            'invoices:update',
-            'invoices:download',
-            'invoices:delete',
-            'invoice-settings:view',
-            'invoice-settings:update',
-        ])->description('Managers have full access to all projects, time entries, ect. but cannot manage the organization (add/remove member, edit the organization, ect.).');
-
-        Jetstream::role(Role::Employee->value, 'Employee', [
-            'charts:view:own',
-            'projects:view',
-            'tags:view',
-            'tasks:view',
-            'clients:view',
-            'time-entries:view:own',
-            'time-entries:create:own',
-            'time-entries:update:own',
-            'time-entries:delete:own',
-            'organizations:view',
-        ])->description('Employees have the ability to read, create, and update their own time entries, they can see the projects that they are members of and the clients they are assigned to.');
-
-        Jetstream::role(Role::Placeholder->value, 'Placeholder', [
-        ])->description('Placeholders are used for importing data. They cannot log in and have no permissions.');
+        foreach (PermissionStore::roleDefinitions() as $role => $definition) {
+            Jetstream::role($role, $definition['name'], $definition['permissions'])
+                ->description($definition['description']);
+        }
 
         Jetstream::inertia()
             ->whenRendering(
diff --git a/app/Rules/Base64ImageRule.php b/app/Rules/Base64ImageRule.php
new file mode 100644
index 00000000..1c09f7dd
--- /dev/null
+++ b/app/Rules/Base64ImageRule.php
@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Rules;
+
+use App\Support\Base64File;
+use Closure;
+use Illuminate\Contracts\Validation\ValidationRule;
+use Illuminate\Translation\PotentiallyTranslatedString;
+
+class Base64ImageRule implements ValidationRule
+{
+    private const array ALLOWED_MIME_TYPES = [
+        'image/jpeg',
+        'image/png',
+    ];
+
+    /**
+     * Run the validation rule.
+     *
+     * @param  Closure(string): PotentiallyTranslatedString  $fail
+     */
+    public function validate(string $attribute, mixed $value, Closure $fail): void
+    {
+        if (! is_string($value)) {
+            $fail(__('validation.string'));
+
+            return;
+        }
+
+        $file = Base64File::decode($value);
+        if ($file === null || ! in_array($file['mime_type'], self::ALLOWED_MIME_TYPES, true)) {
+            $fail(__('validation.mimes', ['values' => 'jpg, png']));
+        }
+    }
+}
diff --git a/app/Service/PermissionStore.php b/app/Service/PermissionStore.php
index d346691c..74000f95 100644
--- a/app/Service/PermissionStore.php
+++ b/app/Service/PermissionStore.php
@@ -4,14 +4,238 @@ declare(strict_types=1);
 
 namespace App\Service;
 
+use App\Enums\Role;
 use App\Models\Organization;
 use App\Models\User;
 use Illuminate\Support\Facades\Auth;
-use Laravel\Jetstream\Jetstream;
-use Laravel\Jetstream\Role;
 
 class PermissionStore
 {
+    /**
+     * @var array<string, array{name: string, permissions: array<string>, description: string}>
+     */
+    private const array ROLE_DEFINITIONS = [
+        'owner' => [
+            'name' => 'Owner',
+            'permissions' => [
+                'charts:view:own',
+                'charts:view:all',
+                'projects:view',
+                'projects:view:all',
+                'projects:create',
+                'projects:update',
+                'projects:delete',
+                'project-members:view',
+                'project-members:create',
+                'project-members:update',
+                'project-members:delete',
+                'tasks:view',
+                'tasks:view:all',
+                'tasks:create',
+                'tasks:create:all',
+                'tasks:update',
+                'tasks:update:all',
+                'tasks:delete',
+                'tasks:delete:all',
+                'time-entries:view:all',
+                'time-entries:create:all',
+                'time-entries:update:all',
+                'time-entries:delete:all',
+                'time-entries:view:own',
+                'time-entries:create:own',
+                'time-entries:update:own',
+                'time-entries:delete:own',
+                'tags:view',
+                'tags:create',
+                'tags:update',
+                'tags:delete',
+                'clients:view',
+                'clients:view:all',
+                'clients:create',
+                'clients:update',
+                'clients:delete',
+                'organizations:view',
+                'organizations:update',
+                'organizations:delete',
+                'import',
+                'export',
+                'invitations:view',
+                'invitations:create',
+                'invitations:resend',
+                'invitations:remove',
+                'members:view',
+                'members:invite-placeholder',
+                'members:change-ownership',
+                'members:make-placeholder',
+                'members:merge-into',
+                'members:update',
+                'members:delete',
+                'billing',
+                'reports:view',
+                'reports:create',
+                'reports:update',
+                'reports:delete',
+                'invoices:view',
+                'invoices:create',
+                'invoices:update',
+                'invoices:download',
+                'invoices:delete',
+                'invoice-settings:view',
+                'invoice-settings:update',
+            ],
+            'description' => 'Owner users can perform any action. There is only one owner per organization.',
+        ],
+        'admin' => [
+            'name' => 'Administrator',
+            'permissions' => [
+                'charts:view:own',
+                'charts:view:all',
+                'projects:view',
+                'projects:view:all',
+                'projects:create',
+                'projects:update',
+                'projects:delete',
+                'project-members:view',
+                'project-members:create',
+                'project-members:update',
+                'project-members:delete',
+                'tasks:view',
+                'tasks:view:all',
+                'tasks:create',
+                'tasks:create:all',
+                'tasks:update',
+                'tasks:update:all',
+                'tasks:delete',
+                'tasks:delete:all',
+                'time-entries:view:all',
+                'time-entries:create:all',
+                'time-entries:update:all',
+                'time-entries:delete:all',
+                'time-entries:view:own',
+                'time-entries:create:own',
+                'time-entries:update:own',
+                'time-entries:delete:own',
+                'tags:view',
+                'tags:create',
+                'tags:update',
+                'tags:delete',
+                'clients:view',
+                'clients:view:all',
+                'clients:create',
+                'clients:update',
+                'clients:delete',
+                'organizations:view',
+                'organizations:update',
+                'import',
+                'export',
+                'invitations:view',
+                'invitations:create',
+                'invitations:resend',
+                'invitations:remove',
+                'members:view',
+                'members:invite-placeholder',
+                'members:make-placeholder',
+                'members:merge-into',
+                'members:delete',
+                'members:update',
+                'reports:view',
+                'reports:create',
+                'reports:update',
+                'reports:delete',
+                'invoices:view',
+                'invoices:create',
+                'invoices:update',
+                'invoices:download',
+                'invoices:delete',
+                'invoice-settings:view',
+                'invoice-settings:update',
+            ],
+            'description' => 'Administrator users can perform any action, except accessing the billing dashboard.',
+        ],
+        'manager' => [
+            'name' => 'Manager',
+            'permissions' => [
+                'charts:view:own',
+                'charts:view:all',
+                'projects:view',
+                'projects:view:all',
+                'projects:create',
+                'projects:update',
+                'projects:delete',
+                'project-members:view',
+                'project-members:create',
+                'project-members:update',
+                'project-members:delete',
+                'tasks:view',
+                'tasks:view:all',
+                'tasks:create',
+                'tasks:create:all',
+                'tasks:update',
+                'tasks:update:all',
+                'tasks:delete',
+                'tasks:delete:all',
+                'time-entries:view:all',
+                'time-entries:create:all',
+                'time-entries:update:all',
+                'time-entries:delete:all',
+                'time-entries:view:own',
+                'time-entries:create:own',
+                'time-entries:update:own',
+                'time-entries:delete:own',
+                'tags:view',
+                'tags:create',
+                'tags:update',
+                'tags:delete',
+                'clients:view',
+                'clients:view:all',
+                'clients:create',
+                'clients:update',
+                'clients:delete',
+                'organizations:view',
+                'invitations:view',
+                'members:view',
+                'reports:view',
+                'reports:create',
+                'reports:update',
+                'reports:delete',
+                'invoices:view',
+                'invoices:create',
+                'invoices:update',
+                'invoices:download',
+                'invoices:delete',
+                'invoice-settings:view',
+                'invoice-settings:update',
+            ],
+            'description' => 'Managers have full access to all projects, time entries, ect. but cannot manage the organization (add/remove member, edit the organization, ect.).',
+        ],
+        'employee' => [
+            'name' => 'Employee',
+            'permissions' => [
+                'charts:view:own',
+                'projects:view',
+                'tags:view',
+                'tasks:view',
+                'clients:view',
+                'time-entries:view:own',
+                'time-entries:create:own',
+                'time-entries:update:own',
+                'time-entries:delete:own',
+                'organizations:view',
+            ],
+            'description' => 'Employees have the ability to read, create, and update their own time entries, they can see the projects that they are members of and the clients they are assigned to.',
+        ],
+        'placeholder' => [
+            'name' => 'Placeholder',
+            'permissions' => [],
+            'description' => 'Placeholders are used for importing data. They cannot log in and have no permissions.',
+        ],
+    ];
+
+    /**
+     * @var array<string, array<string>>
+     */
+    private static array $customRolePermissions = [];
+
     /**
      * @var array<string, array<string>>
      */
@@ -22,6 +246,37 @@ class PermissionStore
         $this->permissionCache = [];
     }
 
+    /**
+     * @return array<string, array{name: string, permissions: array<string>, description: string}>
+     */
+    public static function roleDefinitions(): array
+    {
+        return self::ROLE_DEFINITIONS;
+    }
+
+    /**
+     * @param  array<string>  $permissions
+     */
+    public static function registerCustomRole(string $role, array $permissions): void
+    {
+        self::$customRolePermissions[$role] = $permissions;
+    }
+
+    public static function resetCustomRoles(): void
+    {
+        self::$customRolePermissions = [];
+    }
+
+    /**
+     * @return array<string>
+     */
+    public static function permissionsForRole(string $role): array
+    {
+        return self::$customRolePermissions[$role]
+            ?? self::ROLE_DEFINITIONS[$role]['permissions']
+            ?? [];
+    }
+
     public function has(Organization $organization, string $permission): bool
     {
         /** @var User|null $user */
@@ -68,14 +323,11 @@ class PermissionStore
             return [];
         }
 
-        /** @var Role|null $roleObj */
-        $roleObj = Jetstream::findRole($role);
-
-        $permissions = $roleObj->permissions ?? [];
+        $permissions = self::permissionsForRole($role);
 
         // If the organization allows employees to manage tasks and the user is an employee,
         // add the task management permissions for accessible projects
-        if ($role === \App\Enums\Role::Employee->value && $organization->employees_can_manage_tasks) {
+        if ($role === Role::Employee->value && $organization->employees_can_manage_tasks) {
             $permissions = array_merge($permissions, [
                 'tasks:create',
                 'tasks:update',
diff --git a/app/Support/Base64File.php b/app/Support/Base64File.php
new file mode 100644
index 00000000..5a94422b
--- /dev/null
+++ b/app/Support/Base64File.php
@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Support;
+
+use Symfony\Component\Mime\MimeTypes;
+
+class Base64File
+{
+    /**
+     * @return array{data: string, mime_type: string}|null
+     */
+    public static function decode(string $value): ?array
+    {
+        if (str_contains($value, ',')) {
+            [, $value] = explode(',', $value, 2);
+        }
+
+        $value = preg_replace('/\s+/', '', $value);
+        if ($value === null || $value === '') {
+            return null;
+        }
+
+        $decoded = base64_decode($value, true);
+        if ($decoded === false) {
+            return null;
+        }
+
+        $mimeType = (new \finfo(FILEINFO_MIME_TYPE))->buffer($decoded);
+        if ($mimeType === false) {
+            return null;
+        }
+
+        return [
+            'data' => $decoded,
+            'mime_type' => $mimeType,
+        ];
+    }
+
+    public static function extension(string $mimeType): ?string
+    {
+        return MimeTypes::getDefault()->getExtensions($mimeType)[0] ?? null;
+    }
+}
diff --git a/database/migrations/2026_05_21_000001_add_pending_email_to_users_table.php b/database/migrations/2026_05_21_000001_add_pending_email_to_users_table.php
new file mode 100644
index 00000000..d4336666
--- /dev/null
+++ b/database/migrations/2026_05_21_000001_add_pending_email_to_users_table.php
@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('users', function (Blueprint $table): void {
+            $table->string('pending_email')->nullable()->after('email');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('users', function (Blueprint $table): void {
+            $table->dropColumn('pending_email');
+        });
+    }
+};
diff --git a/lang/en/exceptions.php b/lang/en/exceptions.php
index fda420e6..485eb145 100644
--- a/lang/en/exceptions.php
+++ b/lang/en/exceptions.php
@@ -23,6 +23,7 @@ use App\Exceptions\Api\TimeEntryStillRunningApiException;
 use App\Exceptions\Api\UserIsAlreadyMemberOfOrganizationApiException;
 use App\Exceptions\Api\UserIsAlreadyMemberOfProjectApiException;
 use App\Exceptions\Api\UserNotPlaceholderApiException;
+use App\Exceptions\Api\UserResendEmailVerificationNoPendingEmailApiException;
 use App\Service\Export\ExportException;
 
 return [
@@ -49,6 +50,7 @@ return [
         ThisPlaceholderCanNotBeInvitedUseTheMergeToolInsteadException::KEY => 'This placeholder can not be invited use the merge tool instead',
         InvitationForTheEmailAlreadyExistsApiException::KEY => 'The email has already been invited to the organization. Please wait for the user to accept the invitation or resend the invitation email.',
         OverlappingTimeEntryApiException::KEY => 'Overlapping time entries are not allowed.',
+        UserResendEmailVerificationNoPendingEmailApiException::KEY => 'Resend email not possible, no pending email.',
     ],
     'unknown_error_in_admin_panel' => 'An unknown error occurred. Please check the logs.',
 ];
diff --git a/resources/testfiles/test.png b/resources/testfiles/test.png
new file mode 100644
index 00000000..f844619a
Binary files /dev/null and b/resources/testfiles/test.png differ
diff --git a/resources/views/emails/verify-updated-email.blade.php b/resources/views/emails/verify-updated-email.blade.php
new file mode 100644
index 00000000..ba73fb7b
--- /dev/null
+++ b/resources/views/emails/verify-updated-email.blade.php
@@ -0,0 +1,9 @@
+@component('mail::message')
+{{ __('Please verify your new email address for your solidtime account.') }}
+
+@component('mail::button', ['url' => $verificationUrl])
+{{ __('Verify Email Address') }}
+@endcomponent
+
+{{ __('If you did not request this change, you may discard this email.') }}
+@endcomponent
diff --git a/routes/api.php b/routes/api.php
index af539fc7..d80795e9 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -61,6 +61,8 @@ Route::prefix('v1')->name('v1.')->group(static function (): void {
         // User routes
         Route::name('users.')->group(static function (): void {
             Route::get('/users/me', [UserController::class, 'me'])->name('me');
+            Route::put('/users/{user}', [UserController::class, 'update'])->name('update');
+            Route::post('/users/{user}/resend-email-verification', [UserController::class, 'resendEmailVerification'])->name('resend-email-verification');
             Route::delete('/users/{user}', [UserController::class, 'destroy'])->name('destroy');
         });
 
diff --git a/routes/web.php b/routes/web.php
index 9c1f297a..2107b3bd 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -5,6 +5,7 @@ declare(strict_types=1);
 use App\Http\Controllers\Web\DashboardController;
 use App\Http\Controllers\Web\HomeController;
 use App\Http\Controllers\Web\OrganizationInvitationController;
+use App\Http\Controllers\Web\UserController;
 use Illuminate\Support\Facades\Route;
 use Inertia\Inertia;
 use Laravel\Jetstream\Jetstream;
@@ -91,3 +92,7 @@ Route::get('/team-invitations/{invitation}', [OrganizationInvitationController::
 Route::get('/organization-invitations/{invitation}', [OrganizationInvitationController::class, 'accept'])
     ->middleware(['signed:relative'])
     ->name('organization-invitations.accept');
+
+Route::get('/users/{user}/verify-email-change', [UserController::class, 'verifyEmailChange'])
+    ->middleware(['auth:web', config('jetstream.auth_session'), 'signed:relative'])
+    ->name('users.verify-email-change');
diff --git a/tests/Feature/ProfileInformationTest.php b/tests/Feature/ProfileInformationTest.php
index fee045cb..5ce277f8 100644
--- a/tests/Feature/ProfileInformationTest.php
+++ b/tests/Feature/ProfileInformationTest.php
@@ -5,9 +5,12 @@ declare(strict_types=1);
 namespace Tests\Feature;
 
 use App\Enums\Weekday;
+use App\Mail\VerifyUpdatedEmailMail;
 use App\Models\User;
 use App\Service\TimezoneService;
 use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Mail;
+use Illuminate\Support\Facades\URL;
 use Tests\TestCase;
 
 class ProfileInformationTest extends TestCase
@@ -30,7 +33,9 @@ class ProfileInformationTest extends TestCase
     public function test_profile_information_can_be_updated(): void
     {
         // Arrange
-        $user = User::factory()->create();
+        $user = User::factory()->create([
+            'email' => 'test@example.com',
+        ]);
         $timezone = app(TimezoneService::class)->getTimezones()[0];
         $this->actingAs($user);
 
@@ -50,4 +55,120 @@ class ProfileInformationTest extends TestCase
         $this->assertEquals($timezone, $user->timezone);
         $this->assertEquals(Weekday::Sunday, $user->week_start);
     }
+
+    public function test_email_update_keeps_current_email_verified_until_new_email_is_verified(): void
+    {
+        // Arrange
+        Mail::fake();
+        $user = User::factory()->create([
+            'email' => 'current@example.com',
+            'email_verified_at' => now(),
+        ]);
+        $timezone = app(TimezoneService::class)->getTimezones()[0];
+        $this->actingAs($user);
+
+        // Act
+        $response = $this->put('/user/profile-information', [
+            'name' => 'Test Name',
+            'email' => 'New.Email@Example.com',
+            'timezone' => $timezone,
+            'week_start' => Weekday::Sunday->value,
+        ]);
+
+        // Assert
+        $response->assertValid(errorBag: 'updateProfileInformation');
+        $user = $user->fresh();
+        $this->assertEquals('current@example.com', $user->email);
+        $this->assertEquals('new.email@example.com', $user->pending_email);
+        $this->assertNotNull($user->email_verified_at);
+        Mail::assertSent(VerifyUpdatedEmailMail::class, function (VerifyUpdatedEmailMail $mail): bool {
+            return $mail->hasTo('new.email@example.com') && $mail->email === 'new.email@example.com';
+        });
+    }
+
+    public function test_pending_email_can_be_verified(): void
+    {
+        // Arrange
+        $user = User::factory()->create([
+            'email' => 'current@example.com',
+            'pending_email' => 'new.email@example.com',
+        ]);
+        $this->actingAs($user);
+        $verificationUrl = URL::temporarySignedRoute(
+            'users.verify-email-change',
+            now()->addMinutes(60),
+            [
+                'user' => $user->getKey(),
+                'email' => 'new.email@example.com',
+            ],
+            false
+        );
+
+        // Act
+        $response = $this->get($verificationUrl);
+
+        // Assert
+        $response->assertRedirect(route('dashboard', [
+            'bannerStyle' => 'success',
+            'bannerText' => 'Your email address has been updated successfully.',
+        ]));
+        $user = $user->fresh();
+        $this->assertEquals('new.email@example.com', $user->email);
+        $this->assertNull($user->pending_email);
+        $this->assertNotNull($user->email_verified_at);
+    }
+
+    public function test_profile_update_does_not_clear_pending_email_when_email_is_unchanged(): void
+    {
+        // Arrange
+        $user = User::factory()->create([
+            'email' => 'current@example.com',
+            'pending_email' => 'new.email@example.com',
+        ]);
+        $timezone = app(TimezoneService::class)->getTimezones()[0];
+        $this->actingAs($user);
+
+        // Act
+        $response = $this->put('/user/profile-information', [
+            'name' => 'Updated Name',
+            'email' => 'current@example.com',
+            'timezone' => $timezone,
+            'week_start' => Weekday::Sunday->value,
+        ]);
+
+        // Assert
+        $response->assertValid(errorBag: 'updateProfileInformation');
+        $user = $user->fresh();
+        $this->assertEquals('Updated Name', $user->name);
+        $this->assertEquals('current@example.com', $user->email);
+        $this->assertEquals('new.email@example.com', $user->pending_email);
+    }
+
+    public function test_stale_pending_email_verification_link_is_rejected(): void
+    {
+        // Arrange
+        $user = User::factory()->create([
+            'email' => 'current@example.com',
+            'pending_email' => 'newer@example.com',
+        ]);
+        $this->actingAs($user);
+        $verificationUrl = URL::temporarySignedRoute(
+            'users.verify-email-change',
+            now()->addMinutes(60),
+            [
+                'user' => $user->getKey(),
+                'email' => 'older@example.com',
+            ],
+            false
+        );
+
+        // Act
+        $response = $this->get($verificationUrl);
+
+        // Assert
+        $response->assertForbidden();
+        $user = $user->fresh();
+        $this->assertEquals('current@example.com', $user->email);
+        $this->assertEquals('newer@example.com', $user->pending_email);
+    }
 }
diff --git a/tests/TestCase.php b/tests/TestCase.php
index 9cc1ccaf..f3179d19 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -50,6 +50,7 @@ abstract class TestCase extends BaseTestCase
     {
         // Note: It is necessary to clear the permission cache after each test, since the "scoped singletons" are not reset between tests.
         app(PermissionStore::class)->clear();
+        PermissionStore::resetCustomRoles();
         parent::tearDown();
     }
 
diff --git a/tests/TestCaseWithDatabase.php b/tests/TestCaseWithDatabase.php
index 1929c2d9..7dcb7f9e 100644
--- a/tests/TestCaseWithDatabase.php
+++ b/tests/TestCaseWithDatabase.php
@@ -8,6 +8,7 @@ use App\Enums\Role;
 use App\Models\Member;
 use App\Models\Organization;
 use App\Models\User;
+use App\Service\PermissionStore;
 use Illuminate\Foundation\Testing\RefreshDatabase;
 use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Str;
@@ -26,6 +27,7 @@ abstract class TestCaseWithDatabase extends TestCase
         $roleName = 'custom-test-'.Str::uuid();
         Jetstream::role($roleName, 'Custom Test', $permissions)
             ->description('Role custom for testing');
+        PermissionStore::registerCustomRole($roleName, $permissions);
         $user = User::factory()->create();
         if ($isOwner) {
             $organization = Organization::factory()->withOwner($user)->create();
diff --git a/tests/Unit/Endpoint/Api/V1/UserEndpointTest.php b/tests/Unit/Endpoint/Api/V1/UserEndpointTest.php
index c113a317..ec36b38d 100644
--- a/tests/Unit/Endpoint/Api/V1/UserEndpointTest.php
+++ b/tests/Unit/Endpoint/Api/V1/UserEndpointTest.php
@@ -4,7 +4,11 @@ declare(strict_types=1);
 
 namespace Tests\Unit\Endpoint\Api\V1;
 
+use App\Enums\Weekday;
+use App\Mail\VerifyUpdatedEmailMail;
 use App\Models\User;
+use Illuminate\Support\Facades\Mail;
+use Illuminate\Support\Facades\Storage;
 use Laravel\Passport\Passport;
 
 class UserEndpointTest extends ApiEndpointTestAbstract
@@ -42,6 +46,298 @@ class UserEndpointTest extends ApiEndpointTestAbstract
         ]);
     }
 
+    public function test_update_changes_user_name_timezone_and_week_start(): void
+    {
+        // Arrange
+        $data = $this->createUserWithPermission();
+        Passport::actingAs($data->user);
+
+        // Act
+        $response = $this->putJson(route('api.v1.users.update', $data->user->getKey()), [
+            'name' => 'Updated Name',
+            'timezone' => 'America/New_York',
+            'week_start' => Weekday::Sunday->value,
+        ]);
+
+        // Assert
+        $response->assertSuccessful();
+        $response->assertJson([
+            'data' => [
+                'id' => $data->user->getKey(),
+                'name' => 'Updated Name',
+                'timezone' => 'America/New_York',
+                'week_start' => Weekday::Sunday->value,
+            ],
+        ]);
+
+        $user = $data->user->fresh();
+        $this->assertSame('Updated Name', $user->name);
+        $this->assertSame('America/New_York', $user->timezone);
+        $this->assertSame(Weekday::Sunday, $user->week_start);
+    }
+
+    public function test_update_does_not_change_user_fields_that_are_not_given(): void
+    {
+        // Arrange
+        $data = $this->createUserWithPermission();
+        $data->user->name = 'Original Name';
+        $data->user->timezone = 'Europe/Vienna';
+        $data->user->week_start = Weekday::Monday;
+        $data->user->save();
+        Passport::actingAs($data->user);
+
+        // Act
+        $response = $this->putJson(route('api.v1.users.update', $data->user->getKey()), []);
+
+        // Assert
+        $response->assertSuccessful();
+        $response->assertJson([
+            'data' => [
+                'id' => $data->user->getKey(),
+                'name' => 'Original Name',
+                'timezone' => 'Europe/Vienna',
+                'week_start' => Weekday::Monday->value,
+            ],
+        ]);
+
+        $user = $data->user->fresh();
+        $this->assertSame('Original Name', $user->name);
+        $this->assertSame('Europe/Vienna', $user->timezone);
+        $this->assertSame(Weekday::Monday, $user->week_start);
+    }
+
+    public function test_update_email_stores_pending_email_and_sends_verification_email(): void
+    {
+        // Arrange
+        Mail::fake();
+        $data = $this->createUserWithPermission();
+        $data->user->email = 'current@example.com';
+        $data->user->email_verified_at = now();
+        $data->user->save();
+        Passport::actingAs($data->user);
+
+        // Act
+        $response = $this->putJson(route('api.v1.users.update', $data->user->getKey()), [
+            'email' => 'New.Email@Example.com',
+        ]);
+
+        // Assert
+        $response->assertSuccessful();
+
+        $user = $data->user->fresh();
+        $this->assertSame('current@example.com', $user->email);
+        $this->assertSame('new.email@example.com', $user->pending_email);
+        $this->assertNotNull($user->email_verified_at);
+        Mail::assertSent(VerifyUpdatedEmailMail::class, function (VerifyUpdatedEmailMail $mail): bool {
+            return $mail->hasTo('new.email@example.com') && $mail->email === 'new.email@example.com';
+        });
+    }
+
+    public function test_resend_email_verification_sends_pending_email_verification_email(): void
+    {
+        // Arrange
+        Mail::fake();
+        $data = $this->createUserWithPermission();
+        $data->user->pending_email = 'new.email@example.com';
+        $data->user->save();
+        Passport::actingAs($data->user);
+
+        // Act
+        $response = $this->postJson(route('api.v1.users.resend-email-verification', $data->user->getKey()));
+
+        // Assert
+        $response->assertNoContent();
+        Mail::assertNotSent(VerifyUpdatedEmailMail::class);
+        Mail::assertQueued(VerifyUpdatedEmailMail::class, function (VerifyUpdatedEmailMail $mail): bool {
+            return $mail->hasTo('new.email@example.com') && $mail->email === 'new.email@example.com';
+        });
+    }
+
+    public function test_resend_email_verification_fails_if_given_id_is_not_the_authenticated_user(): void
+    {
+        // Arrange
+        Mail::fake();
+        $data = $this->createUserWithPermission();
+        $otherData = $this->createUserWithPermission();
+        Passport::actingAs($otherData->user);
+
+        // Act
+        $response = $this->postJson(route('api.v1.users.resend-email-verification', $data->user->getKey()));
+
+        // Assert
+        $response->assertForbidden();
+        Mail::assertNotSent(VerifyUpdatedEmailMail::class);
+        Mail::assertNotQueued(VerifyUpdatedEmailMail::class);
+    }
+
+    public function test_resend_email_verification_fails_without_pending_email(): void
+    {
+        // Arrange
+        $data = $this->createUserWithPermission();
+        $data->user->pending_email = null;
+        $data->user->save();
+        Passport::actingAs($data->user);
+
+        // Act
+        $response = $this->postJson(route('api.v1.users.resend-email-verification', $data->user->getKey()));
+
+        // Assert
+        $response->assertStatus(400);
+        $response->assertJson([
+            'error' => true,
+            'key' => 'user_resend_email_verification_no_pending_email',
+            'message' => 'Resend email not possible, no pending email.',
+        ]);
+        Mail::assertNotSent(VerifyUpdatedEmailMail::class);
+        Mail::assertNotQueued(VerifyUpdatedEmailMail::class);
+    }
+
+    public function test_update_changes_user_photo_from_base64_encoded_image(): void
+    {
+        // Arrange
+        $data = $this->createUserWithPermission();
+        $photoDisk = (string) config('jetstream.profile_photo_disk', 'public');
+        $previousPhotoPath = 'profile-photos/previous.png';
+        $photo = file_get_contents(resource_path('testfiles/test.png'));
+        $this->assertIsString($photo);
+        Storage::fake($photoDisk);
+        Storage::disk($photoDisk)->put($previousPhotoPath, 'previous photo');
+        $data->user->profile_photo_path = $previousPhotoPath;
+        $data->user->save();
+        Passport::actingAs($data->user);
+
+        // Act
+        $response = $this->putJson(route('api.v1.users.update', $data->user->getKey()), [
+            'photo' => base64_encode($photo),
+        ]);
+
+        // Assert
+        $response->assertSuccessful();
+
+        $user = $data->user->fresh();
+        $this->assertNotNull($user->profile_photo_path);
+        $this->assertNotSame($previousPhotoPath, $user->profile_photo_path);
+        $this->assertStringStartsWith('profile-photos/', $user->profile_photo_path);
+        $this->assertStringEndsWith('.png', $user->profile_photo_path);
+        Storage::disk($photoDisk)->assertExists($user->profile_photo_path);
+        Storage::disk($photoDisk)->assertMissing($previousPhotoPath);
+        $this->assertSame($photo, Storage::disk($photoDisk)->get($user->profile_photo_path));
+    }
+
+    public function test_update_fails_if_name_is_not_a_string(): void
+    {
+        // Arrange
+        $data = $this->createUserWithPermission();
+        Passport::actingAs($data->user);
+
+        // Act
+        $response = $this->putJson(route('api.v1.users.update', $data->user->getKey()), [
+            'name' => 123,
+        ]);
+
+        // Assert
+        $response->assertUnprocessable();
+        $response->assertJsonValidationErrors(['name']);
+    }
+
+    public function test_update_fails_if_name_is_too_long(): void
+    {
+        // Arrange
+        $data = $this->createUserWithPermission();
+        Passport::actingAs($data->user);
+
+        // Act
+        $response = $this->putJson(route('api.v1.users.update', $data->user->getKey()), [
+            'name' => str_repeat('a', 256),
+        ]);
+
+        // Assert
+        $response->assertUnprocessable();
+        $response->assertJsonValidationErrors(['name']);
+    }
+
+    public function test_update_fails_if_timezone_is_invalid(): void
+    {
+        // Arrange
+        $data = $this->createUserWithPermission();
+        Passport::actingAs($data->user);
+
+        // Act
+        $response = $this->putJson(route('api.v1.users.update', $data->user->getKey()), [
+            'timezone' => 'not-a-timezone',
+        ]);
+
+        // Assert
+        $response->assertUnprocessable();
+        $response->assertJsonValidationErrors(['timezone']);
+    }
+
+    public function test_update_fails_if_week_start_is_invalid(): void
+    {
+        // Arrange
+        $data = $this->createUserWithPermission();
+        Passport::actingAs($data->user);
+
+        // Act
+        $response = $this->putJson(route('api.v1.users.update', $data->user->getKey()), [
+            'week_start' => 'not-a-weekday',
+        ]);
+
+        // Assert
+        $response->assertUnprocessable();
+        $response->assertJsonValidationErrors(['week_start']);
+    }
+
+    public function test_update_fails_if_photo_is_not_a_string(): void
+    {
+        // Arrange
+        $data = $this->createUserWithPermission();
+        Passport::actingAs($data->user);
+
+        // Act
+        $response = $this->putJson(route('api.v1.users.update', $data->user->getKey()), [
+            'photo' => 123,
+        ]);
+
+        // Assert
+        $response->assertUnprocessable();
+        $response->assertJsonValidationErrors(['photo']);
+    }
+
+    public function test_update_fails_if_photo_is_not_base64_encoded(): void
+    {
+        // Arrange
+        $data = $this->createUserWithPermission();
+        Passport::actingAs($data->user);
+
+        // Act
+        $response = $this->putJson(route('api.v1.users.update', $data->user->getKey()), [
+            'photo' => 'not base64 encoded',
+        ]);
+
+        // Assert
+        $response->assertUnprocessable();
+        $response->assertJsonValidationErrors(['photo']);
+    }
+
+    public function test_update_fails_if_photo_is_not_a_jpg_or_png(): void
+    {
+        // Arrange
+        $data = $this->createUserWithPermission();
+        $csv = file_get_contents(resource_path('testfiles/generic_projects_import_test_1.csv'));
+        $this->assertIsString($csv);
+        Passport::actingAs($data->user);
+
+        // Act
+        $response = $this->putJson(route('api.v1.users.update', $data->user->getKey()), [
+            'photo' => base64_encode($csv),
+        ]);
+
+        // Assert
+        $response->assertUnprocessable();
+        $response->assertJsonValidationErrors(['photo']);
+    }
+
     public function test_delete_fails_if_given_user_is_not_the_authenticated_user(): void
     {
         // Arrange
diff --git a/tests/Unit/Mail/VerifyUpdatedEmailMailTest.php b/tests/Unit/Mail/VerifyUpdatedEmailMailTest.php
new file mode 100644
index 00000000..0d821545
--- /dev/null
+++ b/tests/Unit/Mail/VerifyUpdatedEmailMailTest.php
@@ -0,0 +1,53 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Unit\Mail;
+
+use App\Mail\VerifyUpdatedEmailMail;
+use App\Models\User;
+use Illuminate\Support\Carbon;
+use Illuminate\Support\Facades\URL;
+use PHPUnit\Framework\Attributes\CoversClass;
+use Tests\TestCaseWithDatabase;
+
+#[CoversClass(VerifyUpdatedEmailMail::class)]
+class VerifyUpdatedEmailMailTest extends TestCaseWithDatabase
+{
+    public function test_mail_renders_content_correctly(): void
+    {
+        // Arrange
+        $user = User::factory()->create();
+        $mail = new VerifyUpdatedEmailMail($user, 'New.Email@Example.com');
+
+        // Act
+        $rendered = $mail->render();
+
+        // Assert
+        $this->assertEquals('new.email@example.com', $mail->email);
+        $this->assertStringContainsString('Please verify your new email address', $rendered);
+    }
+
+    public function test_mail_uses_relative_signed_verification_url(): void
+    {
+        // Arrange
+        Carbon::setTestNow('2026-05-21 12:00:00');
+        $user = User::factory()->create();
+        $mail = new VerifyUpdatedEmailMail($user, 'new.email@example.com');
+
+        // Act
+        $rendered = $mail->render();
+        $expectedPath = URL::temporarySignedRoute(
+            'users.verify-email-change',
+            now()->addMinutes((int) config('auth.verification.expire', 60)),
+            [
+                'user' => $user->getKey(),
+                'email' => 'new.email@example.com',
+            ],
+            false
+        );
+
+        // Assert
+        $this->assertStringContainsString(e(URL::to($expectedPath)), $rendered);
+    }
+}
diff --git a/tests/Unit/Service/PermissionStoreTest.php b/tests/Unit/Service/PermissionStoreTest.php
index ad98cf27..9c0f0077 100644
--- a/tests/Unit/Service/PermissionStoreTest.php
+++ b/tests/Unit/Service/PermissionStoreTest.php
@@ -9,7 +9,6 @@ use App\Models\Organization;
 use App\Models\User;
 use App\Service\PermissionStore;
 use Illuminate\Foundation\Testing\RefreshDatabase;
-use Laravel\Jetstream\Jetstream;
 use PHPUnit\Framework\Attributes\CoversClass;
 use Tests\TestCase;
 
@@ -122,7 +121,7 @@ class PermissionStoreTest extends TestCase
         $result = $permissionStore->getPermissions($organization);
 
         // Assert
-        $this->assertSame(Jetstream::findRole(Role::Employee->value)->permissions, $result);
+        $this->assertSame(PermissionStore::permissionsForRole(Role::Employee->value), $result);
     }
 
     public function test_employee_does_not_have_task_permissions_by_default(): void