diff --git a/src/Foil/ServiceCollectionExtensions.cs b/src/Foil/ServiceCollectionExtensions.cs
index 2169ebb..93b5d21 100644
--- a/src/Foil/ServiceCollectionExtensions.cs
+++ b/src/Foil/ServiceCollectionExtensions.cs
@@ -103,7 +103,7 @@ private static IServiceCollection Add<TService, TImplementation>(this IServiceCo
             interceptionOptions.Interceptors.ForEach(services.TryAddTransient);
             services.TryAdd(descriptorFactory(lifetime));
 
-            services.AddTransient(sp =>
+            services.Add(ServiceDescriptor.Describe(typeof(TService), sp =>
             {
                 var interceptorInstances = interceptionOptions.Interceptors
                     .Select(sp.GetRequiredService)
@@ -118,7 +118,7 @@ private static IServiceCollection Add<TService, TImplementation>(this IServiceCo
 
                 return proxyFactory.CreateInterfaceProxyWithTarget<TService>(implementation, proxyGenerationOptions,
                     interceptorInstances);
-            });
+            }, lifetime));
 
             return services;
         }