diff --git a/packages/blocks/src/root-block/edgeless/utils/tool-overlay.ts b/packages/blocks/src/root-block/edgeless/utils/tool-overlay.ts
index 56c61cd2b695..dbef4ef51a5c 100644
--- a/packages/blocks/src/root-block/edgeless/utils/tool-overlay.ts
+++ b/packages/blocks/src/root-block/edgeless/utils/tool-overlay.ts
@@ -256,7 +256,7 @@ class ToolOverlay extends Overlay {
     );
   }
 
-  dispose(): void {
+  override dispose(): void {
     this.disposables.dispose();
   }