diff --git a/python_client_generator/templates/models.py.mustache b/python_client_generator/templates/models.py.mustache
index e1c6ada..af16798 100644
--- a/python_client_generator/templates/models.py.mustache
+++ b/python_client_generator/templates/models.py.mustache
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from datetime import datetime
 from enum import Enum
 from typing import Any, Dict, List, Literal, Optional, Union
diff --git a/tests/expected/fastapi_app_client/models.py b/tests/expected/fastapi_app_client/models.py
index 4cfbedf..7ce46ff 100644
--- a/tests/expected/fastapi_app_client/models.py
+++ b/tests/expected/fastapi_app_client/models.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from datetime import datetime
 from enum import Enum
 from typing import Any, Dict, List, Literal, Optional, Union
diff --git a/tests/expected/swagger_petstore_client/models.py b/tests/expected/swagger_petstore_client/models.py
index 1ed9275..a1593a5 100644
--- a/tests/expected/swagger_petstore_client/models.py
+++ b/tests/expected/swagger_petstore_client/models.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from datetime import datetime
 from enum import Enum
 from typing import Any, Dict, List, Literal, Optional, Union