diff --git a/test/csharp/project.json b/test/csharp/project.json
index 1ba03831e5..bcef766617 100644
--- a/test/csharp/project.json
+++ b/test/csharp/project.json
@@ -18,5 +18,15 @@
 	}
     },
 
-    "testRunner": "xunit"
+    "testRunner": "xunit",
+
+    "runtimes": {
+        "ubuntu.14.04-x64": { },
+        "centos.7.1-x64": { },
+        "win7-x64": { },
+        "win81-x64": { },
+        "win10-x64": { },
+        "osx.10.10-x64": { },
+        "osx.10.11-x64": { }
+    }
 }