diff --git a/resources/js/packages/api/src/index.ts b/resources/js/packages/api/src/index.ts
index 888c4046..9f3b1a92 100644
--- a/resources/js/packages/api/src/index.ts
+++ b/resources/js/packages/api/src/index.ts
@@ -114,6 +114,8 @@ export type ApiToken = ApiTokenIndexResponse['data'][0];
 
 export type DetailedInvoiceResponse = ZodiosResponseByAlias<SolidTimeApi, 'getInvoice'>;
 
+export type DetailedInvoice = DetailedInvoiceResponse['data'];
+
 export type InvoiceIndexEntry = ZodiosResponseByAlias<SolidTimeApi, 'getInvoices'>['data'][0];
 
 export type UpdateInvoiceSettings = ZodiosBodyByAlias<SolidTimeApi, 'updateInvoiceSettings'>;
diff --git a/resources/js/packages/api/src/openapi.json.client.ts b/resources/js/packages/api/src/openapi.json.client.ts
index 74a7ed21..d270f98b 100644
--- a/resources/js/packages/api/src/openapi.json.client.ts
+++ b/resources/js/packages/api/src/openapi.json.client.ts
@@ -1886,6 +1886,54 @@ const endpoints = makeApi([
             },
         ],
     },
+    {
+        method: 'post',
+        path: '/v1/organizations/:organization/invoices/:invoice/copy',
+        alias: 'copyInvoice',
+        requestFormat: 'json',
+        parameters: [
+            {
+                name: 'body',
+                type: 'Body',
+                schema: z.object({ reference: z.string() }).passthrough(),
+            },
+            {
+                name: 'organization',
+                type: 'Path',
+                schema: z.string(),
+            },
+            {
+                name: 'invoice',
+                type: 'Path',
+                schema: z.string(),
+            },
+        ],
+        response: z.object({ data: DetailedInvoiceResource }).passthrough(),
+        errors: [
+            {
+                status: 401,
+                description: `Unauthenticated`,
+                schema: z.object({ message: z.string() }).passthrough(),
+            },
+            {
+                status: 403,
+                description: `Authorization error`,
+                schema: z.object({ message: z.string() }).passthrough(),
+            },
+            {
+                status: 404,
+                description: `Not found`,
+                schema: z.object({ message: z.string() }).passthrough(),
+            },
+            {
+                status: 422,
+                description: `Validation error`,
+                schema: z
+                    .object({ message: z.string(), errors: z.record(z.array(z.string())) })
+                    .passthrough(),
+            },
+        ],
+    },
     {
         method: 'get',
         path: '/v1/organizations/:organization/invoices/:invoice',