diff --git a/package.json b/package.json
index 6bd7a1c..de49a5b 100644
--- a/package.json
+++ b/package.json
@@ -54,7 +54,7 @@
     "Eugenio Romano <> (http://eromano.github.io/)"
   ],
   "dependencies": {
-    "botbuilder": "0.9.2",
+    "botbuilder": "4.21.0",
     "coveralls": "2.13.3",
     "github": "0.2.4",
     "gpio": "0.2.7",