diff --git a/requirements.txt b/requirements.txt
index 7b6b021..f925649 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -83,7 +83,7 @@ toml==0.10.0
 tornado==6.0.3
 traitlets==4.3.2
 Twisted==19.7.0
-urllib3==1.25.3
+urllib3==1.26.5
 wcwidth==0.1.7
 webencodings==0.5.1
 widgetsnbextension==3.5.1