diff --git a/TinyUrl/packages.config b/TinyUrl/packages.config
index da04566..3a9b9a6 100644
--- a/TinyUrl/packages.config
+++ b/TinyUrl/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Antlr" version="3.5.0.2" targetFramework="net461" />
-  <package id="bootstrap" version="3.3.7" targetFramework="net461" />
+  <package id="bootstrap" version="3.4.1" targetFramework="net461" />
   <package id="jQuery" version="3.3.1" targetFramework="net461" />
   <package id="Microsoft.AspNet.Mvc" version="5.2.4" targetFramework="net461" />
   <package id="Microsoft.AspNet.Razor" version="3.2.4" targetFramework="net461" />