diff --git a/tests/unit/sqlalchemy/test_dialect.py b/tests/unit/sqlalchemy/test_dialect.py
index 5ca6e8c6..317482fb 100644
--- a/tests/unit/sqlalchemy/test_dialect.py
+++ b/tests/unit/sqlalchemy/test_dialect.py
@@ -278,7 +278,7 @@ def test_trino_connection_certificate_auth():
 
 def test_trino_connection_oauth2_auth():
     dialect = TrinoDialect()
-    url = make_url(f'trino://host/?externalAuthentication=true')
+    url = make_url('trino://host/?externalAuthentication=true')
     _, cparams = dialect.create_connect_args(url)
 
     assert cparams['http_scheme'] == "https"
diff --git a/trino/sqlalchemy/dialect.py b/trino/sqlalchemy/dialect.py
index b939ee73..46489526 100644
--- a/trino/sqlalchemy/dialect.py
+++ b/trino/sqlalchemy/dialect.py
@@ -22,7 +22,12 @@
 
 from trino import dbapi as trino_dbapi
 from trino import logging
-from trino.auth import BasicAuthentication, CertificateAuthentication, JWTAuthentication, OAuth2Authentication
+from trino.auth import (
+    BasicAuthentication,
+    CertificateAuthentication,
+    JWTAuthentication,
+    OAuth2Authentication,
+)
 from trino.dbapi import Cursor
 from trino.sqlalchemy import compiler, datatype, error