diff --git a/src/Microsoft.AspNet.TestHost/project.json b/src/Microsoft.AspNet.TestHost/project.json
index 48c00f0871..0028a68196 100644
--- a/src/Microsoft.AspNet.TestHost/project.json
+++ b/src/Microsoft.AspNet.TestHost/project.json
@@ -24,7 +24,7 @@
             "System.Runtime.Extensions": "4.0.10.0",
             "System.Runtime.Serialization.Primitives": "4.0.0.0",
             "System.Threading": "4.0.0.0",
-            "System.Threading.Tasks": "4.0.0.0",
+            "System.Threading.Tasks": "4.0.10.0",
             "System.Threading.Thread": "4.0.0.0"
         }
     }