diff --git a/nonebot/plugin/on.py b/nonebot/plugin/on.py
index 5b18eb10..d81dadea 100644
--- a/nonebot/plugin/on.py
+++ b/nonebot/plugin/on.py
@@ -439,7 +439,7 @@ def on_regex(
 
 
 def on_type(
-    types: Union[Type[Event], Tuple[Type[Event]]],
+    types: Union[Type[Event], Tuple[Type[Event], ...]],
     rule: Optional[Union[Rule, T_RuleChecker]] = None,
     *,
     _depth: int = 0,
diff --git a/nonebot/plugin/on.pyi b/nonebot/plugin/on.pyi
index ec45e05e..ae399bad 100644
--- a/nonebot/plugin/on.pyi
+++ b/nonebot/plugin/on.pyi
@@ -154,7 +154,7 @@ def on_regex(
     state: Optional[T_State] = ...,
 ) -> Type[Matcher]: ...
 def on_type(
-    types: Union[Type[Event], Tuple[Type[Event]]],
+    types: Union[Type[Event], Tuple[Type[Event], ...]],
     rule: Optional[Union[Rule, T_RuleChecker]] = ...,
     *,
     permission: Optional[Union[Permission, T_PermissionChecker]] = ...,