diff --git a/package.json b/package.json
index edf449b..b9a6e84 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,10 @@
     "prettier": "^2.2.1",
     "sinon": "^9.2.1",
     "ts-node": "^9.1.0",
-    "typescript": "^4.1.2"
+    "typescript": "^4.1.2",
+    "@types/express": "^4.17.9",
+    "express": "^4.17.1",
+    "zod": "^1.11.11"
   },
   "peerDependencies": {
     "@types/express": "^4.17.9",