diff --git a/tests/integration.py b/tests/integration.py
index c2b5d6d..8cd8167 100644
--- a/tests/integration.py
+++ b/tests/integration.py
@@ -78,7 +78,7 @@ async def _test_smoke(self, creds_fn):
                 cell = await ws.cell(row, col)
                 self.assertEqual(cell.value, val)
 
-        self.assertEqual(await ws.get_values(), [['1/1', '1/2'], ['2/1', '2/2']])
+        self.assertEqual(await ws.get_values(), [["1/1", "1/2"], ["2/1", "2/2"]])
 
         await ss.del_worksheet(ws)
         self.assertEqual(0, len(ss._ws_cache_idx))