diff --git a/DataflowSignalrAngularDemo/DataflowSignalrAngularDemo/packages.config b/DataflowSignalrAngularDemo/DataflowSignalrAngularDemo/packages.config
index 034e16b..31df802 100644
--- a/DataflowSignalrAngularDemo/DataflowSignalrAngularDemo/packages.config
+++ b/DataflowSignalrAngularDemo/DataflowSignalrAngularDemo/packages.config
@@ -5,7 +5,7 @@
   <package id="AngularJS.Route" version="1.6.1" targetFramework="net461" />
   <package id="Antlr" version="3.5.0.2" targetFramework="net461" />
   <package id="BenTaylor.Microsoft.AspNet.Web.Optimization" version="1.1.0.4" targetFramework="net45" />
-  <package id="bootstrap" version="3.3.7" targetFramework="net461" />
+  <package id="bootstrap" version="3.4.1" targetFramework="net461" />
   <package id="jQuery" version="3.1.1" targetFramework="net461" />
   <package id="knockoutjs" version="3.4.1" targetFramework="net461" />
   <package id="Microsoft.AspNet.Cors" version="5.2.3" targetFramework="net461" />