diff --git a/magnum/db/sqlalchemy/alembic/versions/1d045384b966_add_insecure_baymodel_attr.py b/magnum/db/sqlalchemy/alembic/versions/1d045384b966_add_insecure_baymodel_attr.py
index 87b8308109..dbe81cc562 100644
--- a/magnum/db/sqlalchemy/alembic/versions/1d045384b966_add_insecure_baymodel_attr.py
+++ b/magnum/db/sqlalchemy/alembic/versions/1d045384b966_add_insecure_baymodel_attr.py
@@ -28,7 +28,8 @@ import sqlalchemy as sa  # noqa: E402
 def upgrade():
     insecure_column = sa.Column('insecure', sa.Boolean(), default=False)
     op.add_column('baymodel', insecure_column)
-    baymodel = sa.sql.table('baymodel', insecure_column)
+    baymodel = sa.sql.table('baymodel',
+                            sa.Column('insecure', sa.Boolean(), default=False))
     op.execute(
         baymodel.update().values({'insecure': True})
     )
diff --git a/releasenotes/notes/migrations-1.3.20-60e5f990422f2ca5.yaml b/releasenotes/notes/migrations-1.3.20-60e5f990422f2ca5.yaml
new file mode 100644
index 0000000000..8079f3b783
--- /dev/null
+++ b/releasenotes/notes/migrations-1.3.20-60e5f990422f2ca5.yaml
@@ -0,0 +1,4 @@
+---
+fixes:
+  - |
+    Fixes database migrations with SQLAlchemy 1.3.20.