diff --git a/element.io/app/config.json b/element.io/app/config.json
index 88b5b2ddfc..2ea4ce7c61 100644
--- a/element.io/app/config.json
+++ b/element.io/app/config.json
@@ -43,5 +43,8 @@
         "api_host": "https://posthog.element.io"
     },
     "privacy_policy_url": "https://element.io/cookie-policy",
-    "map_style_url": "https://api.maptiler.com/maps/streets/style.json?key=fU3vlMsMn4Jb6dnEIFsx"
+    "map_style_url": "https://api.maptiler.com/maps/streets/style.json?key=fU3vlMsMn4Jb6dnEIFsx",
+    "setting_defaults": {
+        "RustCrypto.staged_rollout_percent": 10
+    }
 }