diff --git a/asdf_pydantic/model.py b/asdf_pydantic/model.py
index ccba39a..7de635d 100644
--- a/asdf_pydantic/model.py
+++ b/asdf_pydantic/model.py
@@ -2,7 +2,6 @@
 
 import yaml
 from pydantic import BaseModel
-from pydantic.json_schema import GenerateJsonSchema
 from typing_extensions import deprecated
 
 from asdf_pydantic.schema import DEFAULT_ASDF_SCHEMA_REF_TEMPLATE, GenerateAsdfSchema