diff --git a/requirements/strict.txt b/requirements/strict.txt
index 8e8f443..708e96f 100644
--- a/requirements/strict.txt
+++ b/requirements/strict.txt
@@ -56,6 +56,6 @@ sphinx-rtd-theme==0.4.2
 sphinxcontrib-websupport==1.1.0
 traitlets==4.3.2
 typing==3.6.6
-urllib3==1.24.2
+urllib3==1.26.5
 wcwidth==0.1.7
 wrapt==1.10.11