diff --git a/requirements.txt b/requirements.txt
index 10dd724..5ec80f4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ tox==3.2.1
 tqdm==4.23.4
 traitlets==4.3.2
 twine==1.11.0
-urllib3==1.22
+urllib3==1.26.5
 virtualenv==16.0.0
 wcwidth==0.1.7
 wrapt==1.10.11