diff --git a/requirements.txt b/requirements.txt
index 1bfa825..487b15c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -57,7 +57,7 @@ terminado==0.8.1
 testpath==0.4.2
 tornado==5.1.1
 traitlets==4.3.2
-urllib3==1.24.1
+urllib3==1.26.5
 wcwidth==0.1.7
 webencodings==0.5.1
 widgetsnbextension==3.4.2