diff --git a/requirements.txt b/requirements.txt
index 544cc41..d43081a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -40,7 +40,7 @@ requests==2.22.0
 six==1.12.0
 SQLAlchemy==1.3.5
 starlette==0.12.1
-ujson==1.35
+ujson==5.4.0
 urllib3==1.25.3
 uvicorn==0.8.3
 uvloop==0.12.2