diff --git a/requirements.txt b/requirements.txt
index 2fd4caf..4e48ff3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,6 +17,6 @@ six==1.11.0
 stripe==1.79.1
 tinycss2==0.6.1
 tornado==5.0.1
-urllib3==1.22
+urllib3==1.24.2
 WeasyPrint==0.42.3
 webencodings==0.5.1