diff --git a/packages/google-cloud-policytroubleshooter/package.json b/packages/google-cloud-policytroubleshooter/package.json
index 34eb26c6120..d13521d7299 100644
--- a/packages/google-cloud-policytroubleshooter/package.json
+++ b/packages/google-cloud-policytroubleshooter/package.json
@@ -44,7 +44,7 @@
   "devDependencies": {
     "@types/mocha": "^8.0.4",
     "@types/node": "^14.14.10",
-    "@types/sinon": "^9.0.9",
+    "@types/sinon": "^10.0.0",
     "c8": "^7.3.5",
     "gts": "^3.0.3",
     "jsdoc": "^3.6.6",
@@ -54,7 +54,7 @@
     "mocha": "^8.2.1",
     "null-loader": "^4.0.1",
     "pack-n-play": "^1.0.0-2",
-    "sinon": "^9.2.1",
+    "sinon": "^10.0.0",
     "ts-loader": "^8.0.11",
     "typescript": "^4.1.2",
     "webpack": "^5.9.0",