diff --git a/python/test/annotator/seq2seq/qwen_transformer_test.py b/python/test/annotator/seq2seq/qwen_transformer_test.py
index 05a063857cc900..72c9bc675cf99d 100644
--- a/python/test/annotator/seq2seq/qwen_transformer_test.py
+++ b/python/test/annotator/seq2seq/qwen_transformer_test.py
@@ -20,7 +20,7 @@
 from test.util import SparkContextForTest
 
 
-@pytest.mark.fast
+@pytest.mark.slow
 class QwenTransformerTextGenerationTestSpec(unittest.TestCase):
     def setUp(self):
         self.spark = SparkContextForTest.spark