diff --git a/L6-P1-4 ViewsAndLayout/L4-P1-5/packages.config b/L6-P1-4 ViewsAndLayout/L4-P1-5/packages.config
index add4784..e2ce5b8 100644
--- a/L6-P1-4 ViewsAndLayout/L4-P1-5/packages.config	
+++ b/L6-P1-4 ViewsAndLayout/L4-P1-5/packages.config	
@@ -3,7 +3,7 @@
   <package id="Antlr" version="3.5.0.2" targetFramework="net472" />
   <package id="Autofac" version="4.9.4" targetFramework="net472" />
   <package id="Autofac.Mvc5" version="4.0.2" targetFramework="net472" />
-  <package id="bootstrap" version="3.3.7" targetFramework="net472" />
+  <package id="bootstrap" version="3.4.1" targetFramework="net472" />
   <package id="jQuery" version="3.4.1" targetFramework="net472" />
   <package id="jQuery.Validation" version="1.17.0" targetFramework="net472" />
   <package id="Microsoft.AspNet.Mvc" version="5.2.7" targetFramework="net472" />