diff --git a/setup.py b/setup.py
index 1524acb..5016272 100644
--- a/setup.py
+++ b/setup.py
@@ -47,7 +47,7 @@
     'keywords': ["alibabacloud", "sdk", "tea"],
     'packages': find_packages(exclude=["tests*"]),
     'platforms': 'any',
-    'install_requires': ['requests>=2.23.0', 'alibabacloud-tea>=0.0.3'],
+    'install_requires': ['requests==2.21.0', 'alibabacloud-tea>=0.0.3'],
     'classifiers': (
         'Development Status :: 5 - Production/Stable',
         'Intended Audience :: Developers',