diff --git a/test/TestSites/project.json b/test/TestSites/project.json
index 7d2afae885..c1c86247e5 100644
--- a/test/TestSites/project.json
+++ b/test/TestSites/project.json
@@ -15,7 +15,6 @@
     "dnxcore50": {
       "dependencies": {
         "System.Net.Primitives": "4.0.11-*",
-        "System.Runtime": "4.0.21-*"
       }
     }
   },