diff --git a/runware/types.py b/runware/types.py
index 13f5f22..f9d8048 100644
--- a/runware/types.py
+++ b/runware/types.py
@@ -1142,6 +1142,7 @@ class IInputFrame(SerializableMixin):
 @dataclass
 class IInputReference(SerializableMixin):
     image: Union[str, File]
+    role: Optional[str] = None
     tag: Optional[str] = None
     refType: Optional[str] = None
     strength: Optional[float] = None