diff --git a/requirements.txt b/requirements.txt
index ed7ecf5..c6fa44d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -67,7 +67,7 @@ tornado==5.1
 traitlets==4.3.2
 typogrify==2.0.7
 Unidecode==1.0.22
-urllib3==1.23
+urllib3==1.26.5
 watchdog==0.8.3
 wcwidth==0.1.7
 webassets==0.12.1