diff --git a/core/shared/labs.js b/core/shared/labs.js
index d810399c19..0011333a67 100644
--- a/core/shared/labs.js
+++ b/core/shared/labs.js
@@ -25,7 +25,8 @@ const BETA_FEATURES = [
 const ALPHA_FEATURES = [
     'oauthLogin',
     'membersFiltering',
-    'emailOnlyPosts'
+    'emailOnlyPosts',
+    'customThemeSettings'
 ];
 
 module.exports.WRITABLE_KEYS_ALLOWLIST = [...BETA_FEATURES, ...ALPHA_FEATURES];