diff --git a/requirements.txt b/requirements.txt
index 8712f72..2947f02 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -63,7 +63,7 @@ testpath==0.4.1
 tornado==5.1.1
 traitlets==4.3.2
 typed-ast==1.1.0
-urllib3==1.24.2
+urllib3==1.26.5
 wcwidth==0.1.7
 webencodings==0.5.1
 widgetsnbextension==3.4.2