diff --git a/src/SwaggerUi.Owin/SwaggerUi.Owin.csproj b/src/SwaggerUi.Owin/SwaggerUi.Owin.csproj
index 4bcea9b..d110594 100644
--- a/src/SwaggerUi.Owin/SwaggerUi.Owin.csproj
+++ b/src/SwaggerUi.Owin/SwaggerUi.Owin.csproj
@@ -50,7 +50,7 @@
       <Version>3.1.0</Version>
     </PackageReference>
     <PackageReference Include="Microsoft.Owin.FileSystems">
-      <Version>3.1.0</Version>
+      <Version>4.1.1</Version>
     </PackageReference>
     <PackageReference Include="Microsoft.Owin.staticfiles">
       <Version>3.1.0</Version>