diff --git a/examples/express-ex/package.json b/examples/express-ex/package.json
index 69e7c0a..71fc7e8 100644
--- a/examples/express-ex/package.json
+++ b/examples/express-ex/package.json
@@ -14,6 +14,7 @@
   "author": "fabiojose@gmail.com",
   "license": "Apache-2.0",
   "dependencies": {
-    "express": "^4.17.1"
+    "express": "^4.17.1",
+    "cloudevents-sdk": "cloudevents/sdk-javascript#receive"
   }
 }