diff --git a/requirements.txt b/requirements.txt
index 580e39f..0820335 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,8 +3,8 @@ arrow>=1.0.0,<2.0.0; python_version >= '3.6'
 iso8601>=0.1.14
 six>=1.11.0
 qiniu>=7.3.1
-requests==2.31.0
-urllib3==1.26.18
+requests<=2.31.0
+urllib3<=1.26.18
 requests-toolbelt==1.0.0
 Werkzeug>=0.16.0,<2.0.0
 secure-cookie>=0.1.0,<1.0.0