diff --git a/requirements.txt b/requirements.txt
index e38e01c..e313e93 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -63,7 +63,7 @@ sphinxcontrib-serializinghtml==1.1.4
 tornado==6.0.4
 traitlets==4.3.3
 typed-ast==1.4.1
-urllib3==1.25.9
+urllib3==1.26.5
 wcwidth==0.1.9
 wget==3.2
 wrapt==1.11.2