diff --git a/src/Umbraco.Core/Umbraco.Core.csproj b/src/Umbraco.Core/Umbraco.Core.csproj
old mode 100755
new mode 100644
index c0149ccadb92..b9a7d04be9fe
--- a/src/Umbraco.Core/Umbraco.Core.csproj
+++ b/src/Umbraco.Core/Umbraco.Core.csproj
@@ -66,7 +66,7 @@
       <Version>5.2.7</Version>
     </PackageReference>
     <PackageReference Include="Microsoft.Owin">
-      <Version>4.0.1</Version>
+      <Version>4.1.1</Version>
     </PackageReference>
     <PackageReference Include="MiniProfiler" Version="4.0.138" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.1" />
diff --git a/src/Umbraco.Tests/Umbraco.Tests.csproj b/src/Umbraco.Tests/Umbraco.Tests.csproj
index 20cea53b0960..5b97a3c5e37d 100644
--- a/src/Umbraco.Tests/Umbraco.Tests.csproj
+++ b/src/Umbraco.Tests/Umbraco.Tests.csproj
@@ -95,7 +95,7 @@
     <PackageReference Include="Microsoft.AspNet.WebApi.Owin" Version="5.2.7" />
     <PackageReference Include="Microsoft.AspNet.WebApi.SelfHost" Version="5.2.7" />
     <PackageReference Include="Microsoft.AspNet.WebApi.WebHost" Version="5.2.7" />
-    <PackageReference Include="Microsoft.Owin" Version="4.0.1" />
+    <PackageReference Include="Microsoft.Owin" Version="4.1.1" />
     <PackageReference Include="Microsoft.Owin.Hosting" Version="4.0.1" />
     <PackageReference Include="Microsoft.Owin.Security" Version="4.0.1" />
     <PackageReference Include="Microsoft.Owin.Testing" Version="4.0.1" />