diff --git a/CHANGELOG.md b/CHANGELOG.md
index 12184454041d..881a1390b965 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ FEATURES
 
 ENHANCEMENTS
 
+* resource/aws_apigatewayv2_integration: `timeout_milliseconds` has different valid ranges and default values between HTTP and WebSocket APIs. `timeout_milliseconds` is now `Computed`, meaning Terraform will only perform drift detection of its value when present in a configuration. [GH-16017]
 * resource/aws_cloudwatch_event_target: add plan time validation to `arn`, `role_arn`, `launch_type`, `task_definition_arn` [GH-11685]
 * resource/aws_codeartifact_domain - add `tags` argument. [GH-16006]
 * resource/aws_codeartifact_repository - add `tags` argument. [GH-16006]