diff --git a/requirements.txt b/requirements.txt
index 763a0d8..b299786 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ python-dateutil==2.8.1
 redis==3.3.11
 requests==2.22.0
 simplejson==3.16.0
-six==1.12.0
+six==1.13.0
 transaction==2.4.0
 translationstring==1.3
 ujson==1.35