diff --git a/pip-sample/requirements.txt b/pip-sample/requirements.txt
index 74d37475..98f73399 100644
--- a/pip-sample/requirements.txt
+++ b/pip-sample/requirements.txt
@@ -61,7 +61,7 @@ testpath==0.4.1
 tornado==5.1.1
 traitlets==4.3.2
 tweepy==3.6.0
-urllib3==1.23
+urllib3==1.26.17
 virtualenv==16.0.0
 wcwidth==0.1.7
 webencodings==0.5.1