diff --git a/test/Microsoft.AspNet.Security.Test/Google/GoogleMiddlewareTests.cs b/test/Microsoft.AspNet.Security.Test/Google/GoogleMiddlewareTests.cs
index 9dff1506d5..e12def60fa 100644
--- a/test/Microsoft.AspNet.Security.Test/Google/GoogleMiddlewareTests.cs
+++ b/test/Microsoft.AspNet.Security.Test/Google/GoogleMiddlewareTests.cs
@@ -424,7 +424,7 @@ namespace Microsoft.AspNet.Security.Google
         private static async Task<HttpResponseMessage> ReturnJsonResponse(object content)
         {
             var res = new HttpResponseMessage(HttpStatusCode.OK);
-            var text = await JsonConvert.SerializeObjectAsync(content);
+            var text = await Task.Factory.StartNew(() => JsonConvert.SerializeObject(content));
             res.Content = new StringContent(text, Encoding.UTF8, "application/json");
             return res;
         }
diff --git a/test/Microsoft.AspNet.Security.Test/MicrosoftAccount/MicrosoftAccountMiddlewareTests.cs b/test/Microsoft.AspNet.Security.Test/MicrosoftAccount/MicrosoftAccountMiddlewareTests.cs
index 2c1da025fd..7bfb0d4491 100644
--- a/test/Microsoft.AspNet.Security.Test/MicrosoftAccount/MicrosoftAccountMiddlewareTests.cs
+++ b/test/Microsoft.AspNet.Security.Test/MicrosoftAccount/MicrosoftAccountMiddlewareTests.cs
@@ -204,7 +204,7 @@ namespace Microsoft.AspNet.Security.Tests.MicrosoftAccount
         private static async Task<HttpResponseMessage> ReturnJsonResponse(object content)
         {
             var res = new HttpResponseMessage(HttpStatusCode.OK);
-            var text = await JsonConvert.SerializeObjectAsync(content);
+            var text = await Task.Factory.StartNew(() => JsonConvert.SerializeObject(content));
             res.Content = new StringContent(text, Encoding.UTF8, "application/json");
             return res;
         }
diff --git a/test/Microsoft.AspNet.Security.Test/Twitter/TwitterMiddlewareTests.cs b/test/Microsoft.AspNet.Security.Test/Twitter/TwitterMiddlewareTests.cs
index d5eb56896b..75f7ebbfd3 100644
--- a/test/Microsoft.AspNet.Security.Test/Twitter/TwitterMiddlewareTests.cs
+++ b/test/Microsoft.AspNet.Security.Test/Twitter/TwitterMiddlewareTests.cs
@@ -152,7 +152,7 @@ namespace Microsoft.AspNet.Security.Twitter
         private static async Task<HttpResponseMessage> ReturnJsonResponse(object content)
         {
             var res = new HttpResponseMessage(HttpStatusCode.OK);
-            var text = await JsonConvert.SerializeObjectAsync(content);
+            var text = await Task.Factory.StartNew(() => JsonConvert.SerializeObject(content));
             res.Content = new StringContent(text, Encoding.UTF8, "application/json");
             return res;
         }