diff --git a/requirements.txt b/requirements.txt
index 4c09f2d..b07e64f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,5 +36,5 @@ sphinx-rtd-theme==0.2.4
 sphinxcontrib-websupport==1.0.1
 tornado==4.5.3
 typing==3.6.4
-urllib3==1.22
+urllib3==1.26.5
 watchdog==0.8.3