diff --git a/requirements.txt b/requirements.txt
index c3b85f2..740dd92 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -140,7 +140,7 @@ toolz==0.8.2
 tornado==4.4.2
 traitlets==4.3.1
 unicodecsv==0.14.1
-urllib3==1.21.1
+urllib3==1.26.5
 virtualenv==15.1.0
 wcwidth==0.1.7
 websocket-client==0.44.0