diff --git a/api/requirements/main.txt b/api/requirements/main.txt
index dbcf54f..e34afbc 100644
--- a/api/requirements/main.txt
+++ b/api/requirements/main.txt
@@ -30,7 +30,7 @@ sanic-plugins-framework==0.8.2
 sanic==19.6.3
 six==1.12.0
 sqlalchemy==1.3.8
-ujson==1.35 ; sys_platform != 'win32' and implementation_name == 'cpython'
+ujson==5.4.0 ; sys_platform != 'win32' and implementation_name == 'cpython'
 urllib3==1.25.6
 uvloop==0.13.0
 websockets==7.0