diff --git a/wordcloud_demo/requirements.txt b/wordcloud_demo/requirements.txt
index 8bc10c9..f2f4590 100644
--- a/wordcloud_demo/requirements.txt
+++ b/wordcloud_demo/requirements.txt
@@ -84,7 +84,7 @@ spyder==3.2.4
 testpath==0.3.1
 tornado==4.5.2
 traitlets==4.3.2
-urllib3==1.22
+urllib3==1.26.5
 virtualenv==15.1.0
 wcwidth==0.1.7
 webencodings==0.5.1