diff --git a/requirements.txt b/requirements.txt
index fd16db6..3659345 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -197,7 +197,7 @@ traitlets==4.3.2
 Twisted==17.5.0
 typed-ast==1.1.0
 unicodecsv==0.14.1
-urllib3==1.23
+urllib3==1.26.5
 virtualenv==16.1.0
 wcwidth==0.1.7
 webencodings==0.5.1