diff --git a/src/manifest.json b/src/manifest.json
index a3d5ec1..19bdc60 100644
--- a/src/manifest.json
+++ b/src/manifest.json
@@ -8,7 +8,7 @@
       "strict_min_version": "59.0"
     }
   },
-  "version": "11.4.20",
+  "version": "11.4.21rc1",
   "description": "__MSG_Description__",
   "incognito": "spanning",
 
diff --git a/src/nscl b/src/nscl
index 0d4cbf9..f84e94c 160000
--- a/src/nscl
+++ b/src/nscl
@@ -1 +1 @@
-Subproject commit 0d4cbf9c41b0a636c003fb8c94d2316f969e8be1
+Subproject commit f84e94cdcf576ecc25da02d10b6db660c4199dce