Fixed #10

package.props

@@ -1,7 +1,7 @@
 <Project>
 
   <PropertyGroup>
-    <Version>5.9.0</Version>
+    <Version>5.9.1</Version>
     <PackageReleaseNotes>This package is compatible with .NET 4.5, 4.6 and 4.7 frameworks.</PackageReleaseNotes>
   </PropertyGroup>
 

src/PerRequestLifetimeManager.cs

@@ -28,7 +28,10 @@ namespace Unity.AspNet.Mvc
     /// <code>DynamicModuleUtility.RegisterModule(typeof(UnityPerRequestHttpModule));</code>
     /// </para>
     /// </remarks>
-    public class PerRequestLifetimeManager : LifetimeManager
+    public class PerRequestLifetimeManager : LifetimeManager,
+                                             IInstanceLifetimeManager,
+                                             IFactoryLifetimeManager,
+                                             ITypeLifetimeManager
     {
         private readonly object _lifetimeKey = new object();