diff --git a/requirements.txt b/requirements.txt
index 5646713..73eefc5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 environs==7.3.0
 aiohttp==3.7.4
-ujson==1.35
+ujson==5.4.0
 gunicorn==20.0.4
 requests==2.23.0
 lxml==4.6.3