diff --git a/chain_service/database/models/progress_chain.py b/chain_service/database/models/progress_chain.py
index 1b0ab1d..a6355ae 100644
--- a/chain_service/database/models/progress_chain.py
+++ b/chain_service/database/models/progress_chain.py
@@ -2,7 +2,7 @@ from .chain import Chain
 from .base import BaseConfig, BaseMongoModel
 
 from datetime import datetime
-from pydantic import BaseModel, Field, TypeAdapter
+from pydantic import BaseModel, Field
 from typing import Literal, Union, Annotated, Optional, List