diff --git a/tap_snowflake/__init__.py b/tap_snowflake/__init__.py
index aeec60d..0b3a5d4 100644
--- a/tap_snowflake/__init__.py
+++ b/tap_snowflake/__init__.py
@@ -133,7 +133,7 @@ def get_table_columns(snowflake_conn, tables):
         LOGGER.info('Getting column information for %s...', table)
 
         # Get column data types by SHOW commands
-        show_columns = f"SHOW COLUMNS IN TABLE {table}"
+        show_columns = f'SHOW COLUMNS IN TABLE {table}'
 
         # Convert output of SHOW commands to tables and use SQL joins to get every required information
         select = f"""
diff --git a/tests/integration/test_tap_snowflake.py b/tests/integration/test_tap_snowflake.py
index a964956..3560cda 100644
--- a/tests/integration/test_tap_snowflake.py
+++ b/tests/integration/test_tap_snowflake.py
@@ -90,7 +90,7 @@ def setUpClass(cls):
         # Discover catalog object including only TEST_TYPE_MAPPING table to run detailed tests later
         cls.dt_catalog = test_utils.discover_catalog(
             cls.snowflake_conn,
-            {'tables': f"{SCHEMA_NAME}.test_type_mapping"})
+            {'tables': f'{SCHEMA_NAME}.test_type_mapping'})
 
         cls.dt_stream = cls.dt_catalog.streams[0]
         cls.dt_schema = cls.dt_catalog.streams[0].schema