diff --git a/webapp/requirements.txt b/webapp/requirements.txt
index 43a37ac..a17fbf8 100644
--- a/webapp/requirements.txt
+++ b/webapp/requirements.txt
@@ -106,7 +106,7 @@ sphinxcontrib-qthelp==1.0.3
 sphinxcontrib-serializinghtml==1.1.4
 sseclient==0.0.27
 typing-extensions==3.7.4.3
-ujson==4.0.2
+ujson==5.4.0
 uritemplate==3.0.1
 urllib3>=1.26.5
 Werkzeug==1.0.1