diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 79490e8..a6d03c8
--- a/requirements.txt
+++ b/requirements.txt
@@ -131,7 +131,7 @@ tornado==6.0.2
 traitlets==4.3.2
 Twisted==18.9.0
 typed-ast==1.3.0
-urllib3==1.24.1
+urllib3==1.26.5
 virtualenv==16.6.2
 w3lib==1.20.0
 wcwidth==0.1.7