diff --git a/requirements.txt b/requirements.txt
index 474b7ac..10809bf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,6 +12,6 @@ pytz==2017.2
 PyYAML==5.1
 redis==2.10.6
 six==1.11.0
-ujson==1.35
+ujson==5.4.0
 uWSGI==2.0.15
 vine==1.1.4