diff --git a/Labs/Add Azure AD Sign-In to a ASP.NET App/src/WebApp-OpenIDConnect-DotNet/packages.config b/Labs/Add Azure AD Sign-In to a ASP.NET App/src/WebApp-OpenIDConnect-DotNet/packages.config
old mode 100755
new mode 100644
index b182672..93fdb31
--- a/Labs/Add Azure AD Sign-In to a ASP.NET App/src/WebApp-OpenIDConnect-DotNet/packages.config	
+++ b/Labs/Add Azure AD Sign-In to a ASP.NET App/src/WebApp-OpenIDConnect-DotNet/packages.config	
@@ -8,7 +8,7 @@
   <package id="Microsoft.AspNet.Web.Optimization" version="1.1.3" targetFramework="net45" />
   <package id="Microsoft.AspNet.WebPages" version="3.2.3" targetFramework="net45" />
   <package id="Microsoft.IdentityModel.Protocol.Extensions" version="1.0.2.202250711" targetFramework="net45" />
-  <package id="Microsoft.Owin" version="3.0.1" targetFramework="net45" />
+  <package id="Microsoft.Owin" version="4.0.0" targetFramework="net45" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="3.0.1" targetFramework="net45" />
   <package id="Microsoft.Owin.Security" version="3.0.1" targetFramework="net45" />
   <package id="Microsoft.Owin.Security.Cookies" version="3.0.1" targetFramework="net45" />