diff --git a/plugins/api-docs/src/setupTests.ts b/plugins/api-docs/src/setupTests.ts
index d999dcef27..19b6d29795 100644
--- a/plugins/api-docs/src/setupTests.ts
+++ b/plugins/api-docs/src/setupTests.ts
@@ -24,4 +24,5 @@ Object.defineProperty(global, 'TextDecoder', {
   value: require('node:util').TextDecoder,
 });
 
+// Use a 15s timeout to accommodate the slowest API docs rendering tests under concurrency.
 jest.setTimeout(15_000);