diff --git a/test/Microsoft.AspNetCore.DataProtection.Test.Shared/project.json b/test/Microsoft.AspNetCore.DataProtection.Test.Shared/project.json
index 33e2b1875f..cab6184cad 100644
--- a/test/Microsoft.AspNetCore.DataProtection.Test.Shared/project.json
+++ b/test/Microsoft.AspNetCore.DataProtection.Test.Shared/project.json
@@ -3,7 +3,6 @@
     "dnx451": { },
     "dnxcore50": {
       "dependencies": {
-        "System.Runtime": "4.0.21-*"
       }
     }
   },