diff --git a/firestore/package.json b/firestore/package.json
index 8b43d230..ffdce217 100644
--- a/firestore/package.json
+++ b/firestore/package.json
@@ -6,7 +6,7 @@
     "node": ">= 18"
   },
   "devDependencies": {
-    "@firebase/rules-unit-testing": "3.0.4",
+    "@firebase/rules-unit-testing": "4.0.0",
     "firebase-tools": "13.24.2",
     "firebase": "10.14.1",
     "mocha": "10.8.2"