diff --git a/packages/flutter_test/lib/src/window.dart b/packages/flutter_test/lib/src/window.dart
index 9fdaf2319f..03a2f28a01 100644
--- a/packages/flutter_test/lib/src/window.dart
+++ b/packages/flutter_test/lib/src/window.dart
@@ -463,6 +463,11 @@ class TestWindow implements ui.SingletonFlutterWindow {
     platformDispatcher.onAccessibilityFeaturesChanged = callback;
   }
 
+  @override
+  void updateSemantics(ui.SemanticsUpdate update) {
+    _window.updateSemantics(update);
+  }
+
   @override
   void setIsolateDebugName(String name) {
     platformDispatcher.setIsolateDebugName(name);