diff --git a/src/modules_core/abc/events/on_connect_abc.py b/src/modules_core/abc/events/on_connect_abc.py
index 0210c46..96d1909 100644
--- a/src/modules_core/abc/events/on_connect_abc.py
+++ b/src/modules_core/abc/events/on_connect_abc.py
@@ -5,3 +5,6 @@ class OnConnectABC(ABC):
 
     @abstractmethod
     def __init__(self): pass
+
+    @abstractmethod
+    async def on_connect(self): pass