diff --git a/requirements.txt b/requirements.txt
index 200fde5..a125170 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -55,7 +55,7 @@ testpath==0.4.2
 Theano==1.0.4
 tornado==6.0.3
 traitlets==4.3.2
-urllib3==1.25.3
+urllib3==1.26.5
 wcwidth==0.1.7
 webencodings==0.5.1
 widgetsnbextension==3.5.0