diff --git a/api/tests/integration_tests/vdb/tidb_vector/check_tiflash_ready.py b/api/tests/integration_tests/vdb/tidb_vector/check_tiflash_ready.py
index c350dafd8a499f..294a168310e732 100644
--- a/api/tests/integration_tests/vdb/tidb_vector/check_tiflash_ready.py
+++ b/api/tests/integration_tests/vdb/tidb_vector/check_tiflash_ready.py
@@ -14,7 +14,7 @@ def check_tiflash_ready() -> bool:
 
         with connection.cursor() as cursor:
             # Doc reference:
-            # https://docs.pingcap.com/zh/tidb/v8.5/information-schema-cluster-hardware
+            # https://docs.pingcap.com/zh/tidb/stable/information-schema-cluster-hardware
             select_tiflash_query = """
             SELECT * FROM information_schema.cluster_hardware
             WHERE TYPE='tiflash'