diff --git a/requirements.txt b/requirements.txt
index 10526e9..24da5c2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -67,6 +67,6 @@ terminado==0.6
 Theano==0.9.0
 tornado==4.3
 traitlets==4.2.1
-urllib3==1.21.1
+urllib3==1.24.2
 wcwidth==0.1.7
 wrapt==1.10.8