diff --git a/packages/google-cloud-securitycenter/package.json b/packages/google-cloud-securitycenter/package.json
index b430e8b4fbf..c2c7d1c35a2 100644
--- a/packages/google-cloud-securitycenter/package.json
+++ b/packages/google-cloud-securitycenter/package.json
@@ -56,8 +56,6 @@
     "mocha": "^7.0.0",
     "null-loader": "^3.0.0",
     "pack-n-play": "^1.0.0-2",
-    "power-assert": "^1.4.4",
-    "prettier": "^1.7.4",
     "sinon": "^9.0.1",
     "ts-loader": "^6.2.1",
     "typescript": "^3.8.3",