diff --git a/packages/effect-fc/package.json b/packages/effect-fc/package.json
index f729dad..c2be93f 100644
--- a/packages/effect-fc/package.json
+++ b/packages/effect-fc/package.json
@@ -42,7 +42,7 @@
     "@effect/platform-browser": "^0.76.0",
     "@testing-library/react": "^16.3.0",
     "jsdom": "^26.1.0",
-    "vitest": "^3.2.4"
+    "vitest": "^4.0.0"
   },
   "peerDependencies": {
     "@types/react": "^19.2.0",