diff --git a/docs/requirements.txt b/docs/requirements.txt
index f2a14e39..fc5a48d2 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -29,6 +29,6 @@ sphinxcontrib-fulltoc==1.2.0
 sphinxcontrib-websupport==1.0.1
 tornado==5.0.2
 tox==2.9.1
-urllib3==1.22
+urllib3==1.26.5
 virtualenv==15.1.0
 watchdog==0.8.3