diff --git a/requirements.txt b/requirements.txt
index c401ee6..56e26e0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,5 +27,5 @@ Sphinx==1.6.2
 sphinx-rtd-theme==0.2.4
 sphinxcontrib-websupport==1.0.1
 traitlets==4.3.1
-urllib3==1.21.1
+urllib3==1.24.2
 wcwidth==0.1.7