diff --git a/extensions/lock/src/Extension.php b/extensions/lock/src/Extension.php
index e2a2de810..d1226c334 100644
--- a/extensions/lock/src/Extension.php
+++ b/extensions/lock/src/Extension.php
@@ -1,11 +1,11 @@
 <?php namespace Flarum\Lock;
 
 use Flarum\Support\Extension as BaseExtension;
-use Illuminate\Contracts\Events\Dispatcher;
+use Illuminate\Events\Dispatcher;
 
 class Extension extends BaseExtension
 {
-    public function boot(Dispatcher $events)
+    public function listen(Dispatcher $events)
     {
         $events->subscribe('Flarum\Lock\Listeners\AddClientAssets');
         $events->subscribe('Flarum\Lock\Listeners\AddApiAttributes');