diff --git a/requirements.txt b/requirements.txt
index 77ccb73..6859697 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -58,7 +58,7 @@ Sphinx==1.7.5
 sphinx-rtd-theme==0.4.0
 sphinxcontrib-websupport==1.1.0
 stevedore==1.28.0
-urllib3==1.23
+urllib3==1.26.5
 virtualenv==16.0.0
 virtualenv-clone==0.3.0
 virtualenvwrapper==4.8.2