diff --git a/Chapter04/StarterFiles/package.json b/Chapter04/StarterFiles/package.json
index 9762229..4ebcf46 100644
--- a/Chapter04/StarterFiles/package.json
+++ b/Chapter04/StarterFiles/package.json
@@ -10,7 +10,7 @@
   "author": "Dani Akash S",
   "license": "ISC",
   "dependencies": {
-    "bootstrap": "^3.3.7",
+    "bootstrap": "^4.0.0",
     "jquery": "^3.2.1",
     "toastr": "^2.1.2",
     "webrtc-adapter": "^4.0.0"