diff --git a/AngularTypeScriptEventRsvpSample/package.json b/AngularTypeScriptEventRsvpSample/package.json
index f5f357a48..7371c3d7f 100644
--- a/AngularTypeScriptEventRsvpSample/package.json
+++ b/AngularTypeScriptEventRsvpSample/package.json
@@ -12,7 +12,7 @@
     "angular": "^1.4.6",
     "angular-mocks": "^1.4.6",
     "angular-route": "^1.4.6",
-    "bootstrap": "^3.3.5",
+    "bootstrap": "^4.0.0",
     "express": "^4.13.3",
     "jquery": "^2.1.4"
   },