diff --git a/extensions/flags/composer.json b/extensions/flags/composer.json
index 7856924da..4b06301df 100644
--- a/extensions/flags/composer.json
+++ b/extensions/flags/composer.json
@@ -19,7 +19,7 @@
     }
   ],
   "require": {
-    "flarum/core": "^1.0"
+    "flarum/core": "^1.1"
   },
   "autoload": {
     "psr-4": {