diff --git a/requirements.txt b/requirements.txt
index e6f20f8..90d969c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -52,7 +52,7 @@ SQLAlchemy==1.2.6
 tornado==5.0.2
 transaction==2.2.1
 translationstring==1.3
-urllib3==1.22
+urllib3==1.24.2
 venusian==1.1.0
 waitress==1.1.0
 webencodings==0.5.1