diff --git a/src/Microsoft.Net.Http.Headers/project.json b/src/Microsoft.Net.Http.Headers/project.json
index 4dddd21e94..ed06223354 100644
--- a/src/Microsoft.Net.Http.Headers/project.json
+++ b/src/Microsoft.Net.Http.Headers/project.json
@@ -20,7 +20,6 @@
         "System.Globalization.Extensions": "4.0.1-*",
         "System.Linq": "4.0.1-*",
         "System.Text.Encoding": "4.0.11-*",
-        "System.Runtime": "4.0.21-*"
       }
     }
   }