diff --git a/docs/requirements.txt b/docs/requirements.txt
index 81b9dce8..873930cd 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -24,6 +24,6 @@ sphinx-autobuild==0.7.1
 sphinx-rtd-theme==0.4.2
 sphinxcontrib-websupport==1.1.0
 tornado==5.1.1
-urllib3==1.24.2
+urllib3==1.26.18
 watchdog==0.9.0
 pyflakes==2.0.0