diff --git a/src/manifest.json b/src/manifest.json
index b97e331..daf61dc 100644
--- a/src/manifest.json
+++ b/src/manifest.json
@@ -9,7 +9,7 @@
     },
     "gecko_android": {}
   },
-  "version": "11.5.1",
+  "version": "11.5.2rc1",
   "description": "__MSG_Description__",
   "incognito": "spanning",