diff --git a/samples/CookieSample/project.json b/samples/CookieSample/project.json
index ea527d21dd..bfffda8541 100644
--- a/samples/CookieSample/project.json
+++ b/samples/CookieSample/project.json
@@ -33,8 +33,7 @@
         "System.Runtime": "4.0.20.0",
         "System.Runtime.Extensions": "4.0.10.0",
         "System.Runtime.InteropServices": "4.0.20.0",
-        "System.Text.Encoding": "4.0.10.0",
-        "System.Threading.Tasks": "4.0.0.0"
+        "System.Threading.Tasks": "4.0.10.0"
       }
     }
   }