diff --git a/requirements.txt b/requirements.txt
index b8e3611..7583f4b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -152,7 +152,7 @@ tornado==4.5.3
 tqdm==4.28.1
 traitlets==4.3.2
 ujson==1.35
-urllib3==1.23
+urllib3==1.26.5
 wcwidth==0.1.7
 websocket-client==0.54.0
 Werkzeug==0.14.1