diff --git a/packages/fastify-adapter/package.json b/packages/fastify-adapter/package.json
index d95572e..830d20f 100644
--- a/packages/fastify-adapter/package.json
+++ b/packages/fastify-adapter/package.json
@@ -30,7 +30,7 @@
 		"fastify": "5.6.0",
 		"tsup": "8.5.0",
 		"typescript": "5.9.2",
-		"vitest": "3.2.4"
+		"vitest": "4.0.4"
 	},
 	"engines": {
 		"node": ">=20.0.0"