diff --git a/tools/tdgpt/taosanalytics/test/unit_test.py b/tools/tdgpt/taosanalytics/test/unit_test.py
index aef689a8b6..5ff1717b5f 100644
--- a/tools/tdgpt/taosanalytics/test/unit_test.py
+++ b/tools/tdgpt/taosanalytics/test/unit_test.py
@@ -99,7 +99,7 @@ class ServiceTest(unittest.TestCase):
             if item["type"] == "anomaly-detection":
                 self.assertEqual(len(item["algo"]), 6)
             else:
-                self.assertEqual(len(item["algo"]), 3)
+                self.assertEqual(len(item["algo"]), 4)
 
 
 if __name__ == '__main__':