diff --git a/c#mvc/WebApplication2/WebApplication2/Web.config b/c#mvc/WebApplication2/WebApplication2/Web.config
index fdd78da..5ebde2c 100644
--- a/c#mvc/WebApplication2/WebApplication2/Web.config
+++ b/c#mvc/WebApplication2/WebApplication2/Web.config
@@ -42,15 +42,35 @@
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
-        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
-        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
-        <bindingRedirect oldVersion="1.0.0.0-5.2.4.0" newVersion="5.2.4.0" />
+        <bindingRedirect oldVersion="0.0.0.0-5.2.4.0" newVersion="5.2.4.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="EntityFramework" publicKeyToken="b77a5c561934e089" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-5.0.0.0" newVersion="5.0.0.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="Microsoft.Web.Infrastructure" publicKeyToken="31bf3856ad364e35" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-1.0.0.0" newVersion="1.0.0.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Web.Razor" publicKeyToken="31bf3856ad364e35" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Web.WebPages.Deployment" publicKeyToken="31bf3856ad364e35" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Web.WebPages.Razor" publicKeyToken="31bf3856ad364e35" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
       </dependentAssembly>
     </assemblyBinding>
   </runtime>
diff --git a/c#mvc/WebApplication2/WebApplication2/packages.config b/c#mvc/WebApplication2/WebApplication2/packages.config
index 2047f13..cb15de4 100644
--- a/c#mvc/WebApplication2/WebApplication2/packages.config
+++ b/c#mvc/WebApplication2/WebApplication2/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="5.0.0" targetFramework="net461" />
   <package id="EntityFramework" version="5.0.0" targetFramework="net461" />
   <package id="EntityFramework.zh-Hans" version="5.0.0" targetFramework="net461" />
   <package id="jQuery" version="3.3.1" targetFramework="net461" />