diff --git a/unilabos/resources/resource_tracker.py b/unilabos/resources/resource_tracker.py
index 8ade8e1f..2d429a2e 100644
--- a/unilabos/resources/resource_tracker.py
+++ b/unilabos/resources/resource_tracker.py
@@ -81,6 +81,7 @@ class ResourceDictPoseExtraObjectType(BaseModel):
 
 class ResourceDictPoseExtraObject(BaseModel):
     z_index: Optional[int] = Field(alias="zIndex", default=None)
+    is_flap_y: Optional[bool] = Field(alias="isFlapY", default=None)
 
 
 class ResourceDictPositionType(TypedDict):