diff --git a/test/integration/features/chromium_convert_html.feature b/test/integration/features/chromium_convert_html.feature
index 2513845e..1de00be0 100644
--- a/test/integration/features/chromium_convert_html.feature
+++ b/test/integration/features/chromium_convert_html.feature
@@ -213,6 +213,26 @@ Feature: /forms/chromium/convert/html
       Wait delay > 2 seconds or expression window globalVar === 'ready' returns true.
       """
 
+  # A thenable (async) expression is awaited and its resolved value gates the
+  # print. Without awaiting, the Promise object never evaluates to true and the
+  # request would time out. See https://github.com/gotenberg/gotenberg/pull/1617.
+  Scenario: POST /forms/chromium/convert/html (Wait For Thenable Expression)
+    Given I have a default Gotenberg container
+    When I make a "POST" request to Gotenberg at the "/forms/chromium/convert/html" endpoint with the following form data and header(s):
+      | files                     | testdata/feature-rich-html/index.html        | file   |
+      | waitForExpression         | (async () => window.globalVar === 'ready')() | field  |
+      | Gotenberg-Output-Filename | foo                                          | header |
+    Then the response status code should be 200
+    Then the response header "Content-Type" should be "application/pdf"
+    Then there should be 1 PDF(s) in the response
+    Then there should be the following file(s) in the response:
+      | foo.pdf |
+    Then the "foo.pdf" PDF should have 1 page(s)
+    Then the "foo.pdf" PDF should have the following content at page 1:
+      """
+      Wait delay > 2 seconds or expression window globalVar === 'ready' returns true.
+      """
+
   Scenario: POST /forms/chromium/convert/html (rAF / ResizeObserver / IntersectionObserver fire with waitForExpression)
     Given I have a default Gotenberg container
     When I make a "POST" request to Gotenberg at the "/forms/chromium/convert/html" endpoint with the following form data and header(s):