diff --git a/packages/google-cloud-filestore/package.json b/packages/google-cloud-filestore/package.json
index 701a68e059b..18f722f8a07 100644
--- a/packages/google-cloud-filestore/package.json
+++ b/packages/google-cloud-filestore/package.json
@@ -42,7 +42,7 @@
     "google-gax": "^2.19.0"
   },
   "devDependencies": {
-    "@types/mocha": "^8.2.2",
+    "@types/mocha": "^9.0.0",
     "@types/node": "^14.14.44",
     "@types/sinon": "^10.0.0",
     "c8": "^7.7.2",
@@ -51,7 +51,7 @@
     "jsdoc-fresh": "^1.0.2",
     "jsdoc-region-tag": "^1.0.6",
     "linkinator": "^2.13.6",
-    "mocha": "^8.4.0",
+    "mocha": "^9.0.0",
     "null-loader": "^4.0.1",
     "pack-n-play": "^1.0.0-2",
     "sinon": "^11.0.0",
diff --git a/packages/google-cloud-filestore/samples/package.json b/packages/google-cloud-filestore/samples/package.json
index a4c0f6d0372..969b99a11c9 100644
--- a/packages/google-cloud-filestore/samples/package.json
+++ b/packages/google-cloud-filestore/samples/package.json
@@ -17,6 +17,6 @@
   },
   "devDependencies": {
     "c8": "^7.3.0",
-    "mocha": "^8.1.1"
+    "mocha": "^9.0.0"
   }
 }