diff --git a/src/schemas.py b/src/schemas.py
index abf5967..f9b1cce 100644
--- a/src/schemas.py
+++ b/src/schemas.py
@@ -1,7 +1,4 @@
 #!/usr/bin/env python3
-from flask_marshmallow.sqla import auto_field
-
-from models import SampleMetadata
 from marshm import ma
 from marshmallow import fields