diff --git a/requirements.txt b/requirements.txt
index c5d2227..eea86c6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -67,6 +67,6 @@ tblib==1.3.2
 toolz==0.9.0
 tornado==5.1
 traitlets==4.3.2
-urllib3==1.23
+urllib3==1.26.5
 Werkzeug==0.14.1
 zict==0.1.3