diff --git a/requirements.txt b/requirements.txt
index 9f81f3d5..08f32f4d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -148,7 +148,7 @@ tornado==4.2.1
 toronado==0.0.10
 traitlets==4.0.0
 ua-parser==0.7.1
-ujson==1.35
+ujson==5.4.0
 urllib3==1.16
 uuid==1.30
 uWSGI==2.0.13.1