diff --git a/composer.json b/composer.json
index c7b8b1d..b714692 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
         }
     ],
     "require": {
-        "flarum/core": "^1.8"
+        "flarum/core": "^1.8.6"
     },
     "autoload": {
         "psr-4": {