diff --git a/Source/CSharpDemos/PDIWebDemoCS/packages.config b/Source/CSharpDemos/PDIWebDemoCS/packages.config
index 841ea17..ba10fd6 100644
--- a/Source/CSharpDemos/PDIWebDemoCS/packages.config
+++ b/Source/CSharpDemos/PDIWebDemoCS/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="bootstrap" version="3.3.7" targetFramework="net40" />
+  <package id="bootstrap" version="3.4.1" targetFramework="net40" />
   <package id="jQuery" version="3.3.1" targetFramework="net40" />
 </packages>
\ No newline at end of file