diff --git a/dev/benchmarks/platform_views_layout/lib/main.dart b/dev/benchmarks/platform_views_layout/lib/main.dart
index 2e7378f6a4388..ae0ca150c25be 100644
--- a/dev/benchmarks/platform_views_layout/lib/main.dart
+++ b/dev/benchmarks/platform_views_layout/lib/main.dart
@@ -116,6 +116,13 @@ class _RotationContainerState extends State<RotationContainer>
     );
     _rotationController.repeat();
   }
+
+  @override
+  void dispose() {
+    _rotationController.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     return RotationTransition(
diff --git a/dev/benchmarks/platform_views_layout_hybrid_composition/lib/main.dart b/dev/benchmarks/platform_views_layout_hybrid_composition/lib/main.dart
index 5d27d2ab47d11..ad2f32ee6d6b7 100644
--- a/dev/benchmarks/platform_views_layout_hybrid_composition/lib/main.dart
+++ b/dev/benchmarks/platform_views_layout_hybrid_composition/lib/main.dart
@@ -121,6 +121,13 @@ class _RotationContainerState extends State<RotationContainer>
     );
     _rotationController.repeat();
   }
+
+  @override
+  void dispose() {
+    _rotationController.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     return RotationTransition(