diff --git a/requirements.txt b/requirements.txt
index 2da398c..51e1532 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,5 +24,5 @@ sphinx-autobuild==0.7.1
 sphinx-rtd-theme==0.4.0
 sphinxcontrib-websupport==1.1.0
 tornado==5.1
-urllib3==1.23
+urllib3==1.26.5
 watchdog==0.8.3