diff --git a/backend/requirements.txt b/backend/requirements.txt
index 987f6a1..0765b3e 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -2,7 +2,7 @@ fastapi==0.65.2
 fastapi_contrib==0.2.10
 uvicorn==0.16.0
 starlette
-ujson==4.0.2
+ujson==5.4.0
 python-dotenv==0.18.0
 pytz==2021.1
 python-libnessus