diff --git a/test/Microsoft.AspNetCore.JsonPatch.Test/project.json b/test/Microsoft.AspNetCore.JsonPatch.Test/project.json
index 07a2b3511c..cb87b096e9 100644
--- a/test/Microsoft.AspNetCore.JsonPatch.Test/project.json
+++ b/test/Microsoft.AspNetCore.JsonPatch.Test/project.json
@@ -18,6 +18,10 @@
       "imports": "portable-net451+win8"
     },
     "dnx451": {
+      "frameworkAssemblies": {
+        "System.Runtime": "",
+        "System.Threading.Tasks": ""
+      },
       "dependencies": {
         "Moq": "4.2.1312.1622",
         "xunit.runner.console": "2.1.0"