diff --git a/requirements.txt b/requirements.txt
index 208f791..d6531e5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ six==1.11.0
 snowballstemmer==1.2.1
 Sphinx==1.6.5
 sphinxcontrib-websupport==1.0.1
-urllib3==1.22
+urllib3==1.26.5
 virtualenv==15.1.0
 Werkzeug==0.12.2
 wrapt==1.10.11