diff --git a/CSharp/WebForms/WebForms/packages.config b/CSharp/WebForms/WebForms/packages.config
index a420a9b4..6e36704d 100644
--- a/CSharp/WebForms/WebForms/packages.config
+++ b/CSharp/WebForms/WebForms/packages.config
@@ -3,7 +3,7 @@
   <package id="Antlr" version="3.4.1.9004" targetFramework="net452" />
   <package id="AspNet.ScriptManager.bootstrap" version="3.0.0" targetFramework="net452" />
   <package id="AspNet.ScriptManager.jQuery" version="1.10.2" targetFramework="net452" />
-  <package id="bootstrap" version="3.0.0" targetFramework="net452" />
+  <package id="bootstrap" version="3.4.1" targetFramework="net452" />
   <package id="jQuery" version="1.10.2" targetFramework="net452" />
   <package id="Lacuna.DataAnnotations" version="1.2.0" targetFramework="net452" />
   <package id="Lacuna.RestClient" version="1.11.1" targetFramework="net452" />