diff --git a/samples/MvcSandbox/Startup.cs b/samples/MvcSandbox/Startup.cs
index 2edcde97b4..b963a03a6f 100644
--- a/samples/MvcSandbox/Startup.cs
+++ b/samples/MvcSandbox/Startup.cs
@@ -14,7 +14,7 @@ namespace MvcSandbox
         // This method gets called by the runtime. Use this method to add services to the container.
         public void ConfigureServices(IServiceCollection services)
         {
-            services.AddMvc();
+            services.AddMvc().SetCompatibilityVersion(Microsoft.AspNetCore.Mvc.CompatibilityVersion.Version_2_1);
         }
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.