diff --git a/requirements.txt b/requirements.txt
index 90d5382..4e75740 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -143,7 +143,7 @@ traitlets==4.3.2
 tzlocal==1.5.1
 ujson==1.35
 uritemplate==3.0.0
-urllib3==1.23
+urllib3==1.26.5
 virtualenv==15.1.0
 virtualenv-clone==0.2.6
 virtualenvwrapper==4.8.2