diff --git a/invokeai/backend/model_manager/taxonomy.py b/invokeai/backend/model_manager/taxonomy.py
index 37c1197cc4..14971d2e5b 100644
--- a/invokeai/backend/model_manager/taxonomy.py
+++ b/invokeai/backend/model_manager/taxonomy.py
@@ -87,7 +87,7 @@ class ModelVariantType(str, Enum):
 
 class ModelFormat(str, Enum):
     """Storage format of model."""
-
+    OMI = "omi"
     Diffusers = "diffusers"
     Checkpoint = "checkpoint"
     LyCORIS = "lycoris"