diff --git a/composer.json b/composer.json
index c9a5254..ef910d0 100644
--- a/composer.json
+++ b/composer.json
@@ -18,6 +18,7 @@
         "monolog/monolog": ">=3.10.0",
         "potter/console": ">=0.0.1",
         "potter/container": ">=0.0.1",
+        "potter/event": ">=0.0.3",
         "psr/log": ">=3.0.2"
     }
 }