diff --git a/invokeai/app/invocations/primitives.py b/invokeai/app/invocations/primitives.py
index 61ef9fa27c..7444e826e9 100644
--- a/invokeai/app/invocations/primitives.py
+++ b/invokeai/app/invocations/primitives.py
@@ -305,6 +305,18 @@ class ImageCollectionInvocation(BaseInvocation):
         return ImageCollectionOutput(collection=self.collection)
 
 
+# endregion
+
+# region InpaintMask
+
+
+class InpaintMaskField(BaseModel):
+    """An inapint mask field"""
+
+    mask_name: str = Field(description="The name of the mask image")
+    masked_latens_name: Optional[str] = Field(description="The name of the masked image latents")
+
+
 # endregion
 
 # region Latents