diff --git a/silverback/_click_ext.py b/silverback/_click_ext.py
index c1faf96b..b8157cb8 100644
--- a/silverback/_click_ext.py
+++ b/silverback/_click_ext.py
@@ -246,7 +246,7 @@ def get_cluster_client(ctx: click.Context, *args, **kwargs):
     return update_wrapper(get_cluster_client, f)
 
 
-def bot_path_callback(ctx: click.Context, param: click.Parameter, value):
+def bot_path_callback(ctx: click.Context, param: click.Parameter, value: str | None):
     path = ctx.params.get("path")
     if not path:
         path = "bot:bot"