diff --git a/examples/server/sanic/requirements.txt b/examples/server/sanic/requirements.txt
index cbeebf4..4c829b3 100644
--- a/examples/server/sanic/requirements.txt
+++ b/examples/server/sanic/requirements.txt
@@ -4,5 +4,5 @@ python_engineio
 python_socketio
 sanic==20.12.7
 six==1.10.0
-ujson==1.35
+ujson==5.4.0
 uvloop==0.8.0