diff --git a/bucket_catch/packages/frontend/src/hooks/usePuzzleGameLoop.test.ts b/bucket_catch/packages/frontend/src/hooks/usePuzzleGameLoop.test.ts
index 4a24e90..81a360f 100644
--- a/bucket_catch/packages/frontend/src/hooks/usePuzzleGameLoop.test.ts
+++ b/bucket_catch/packages/frontend/src/hooks/usePuzzleGameLoop.test.ts
@@ -228,7 +228,7 @@ describe("usePuzzleGameLoop", () => {
 
     // Use large canvas so piece doesn't collide on first tick
     const canvas = makeCanvas(800, 600); // basketY=520; piece reaches it at tick~190
-    const { result } = renderHook(() =>
+    renderHook(() =>
       usePuzzleGameLoop(
         makeRef<HTMLCanvasElement | null>(canvas),
         makeRef(500), // far from x=48 → piece will miss
diff --git a/bucket_catch/packages/frontend/vite.config.ts b/bucket_catch/packages/frontend/vite.config.ts
index 6111597..2a3148b 100644
--- a/bucket_catch/packages/frontend/vite.config.ts
+++ b/bucket_catch/packages/frontend/vite.config.ts
@@ -1,5 +1,7 @@
-/// <reference types="vitest" />
-import { defineConfig } from "vite";
+// vitest 4 no longer contributes the `test` key to vite's own defineConfig, so
+// the config is typed by importing defineConfig from vitest/config instead of
+// the (now inert) triple-slash reference.
+import { defineConfig } from "vitest/config";
 import react from "@vitejs/plugin-react";
 
 export default defineConfig({