diff --git a/requirements.txt b/requirements.txt
index 1dc8b4d..54508d3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -108,7 +108,7 @@ testpath==0.3.1
 toolz==0.9.0
 tornado==4.5.3
 traitlets==4.3.2
-urllib3==1.23
+urllib3==1.26.5
 uTidylib==0.3
 wcwidth==0.1.7
 webencodings==0.5