diff --git a/src/Microsoft.Net.WebSockets/project.json b/src/Microsoft.Net.WebSockets/project.json
index d1271a020f..1a18c457ba 100644
--- a/src/Microsoft.Net.WebSockets/project.json
+++ b/src/Microsoft.Net.WebSockets/project.json
@@ -24,7 +24,7 @@
                     "System.Runtime.Extensions": "4.0.10.0",
                     "System.Runtime.Handles":  "4.0.0.0",
                     "System.Runtime.InteropServices": "4.0.20.0",
-                    "System.Security.Cryptography": "4.0.0.0",
+                    "System.Security.Cryptography.Encryption": "4.0.0.0",
                     "System.Security.Cryptography.Hashing.Algorithms": "4.0.0.0",
                     "System.Security.Principal": "4.0.0.0",
                     "System.Text.Encoding": "4.0.20.0",