diff --git a/Source/Platibus.Owin/Platibus.Owin.csproj b/Source/Platibus.Owin/Platibus.Owin.csproj
index 353da3ba..1d6ea6fe 100644
--- a/Source/Platibus.Owin/Platibus.Owin.csproj
+++ b/Source/Platibus.Owin/Platibus.Owin.csproj
@@ -16,7 +16,7 @@
     <FileVersion>6.0.0.0</FileVersion>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.Owin" Version="3.1.0" />
+    <PackageReference Include="Microsoft.Owin" Version="4.0.0" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Platibus\Platibus.csproj" />