diff --git a/requirements.txt b/requirements.txt
index 7d1aeba..60849e9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -146,7 +146,7 @@ toolz==0.8.2
 tornado==4.4.2
 traitlets==4.3.1
 unicodecsv==0.14.1
-urllib3==1.20
+urllib3==1.26.5
 wcwidth==0.1.7
 Werkzeug==0.11.15
 widgetsnbextension==1.2.6