diff --git a/requirements.txt b/requirements.txt
index 1df5b22..f41dd11 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -90,7 +90,7 @@ tornado==6.0.3
 traitlets==4.3.3
 typed-ast==1.4.0
 ujson==1.35
-urllib3==1.25.7
+urllib3==1.26.5
 wcwidth==0.1.7
 webencodings==0.5.1
 widgetsnbextension==3.5.1