diff --git a/requirements.txt b/requirements.txt
index 05b1799..875dcaf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -49,7 +49,7 @@ toml==0.10.2
 twilio==6.38.1
 typed-ast==1.4.1
 typing-extensions==3.7.4.2
-ujson==1.35
+ujson==5.4.0
 urllib3==1.26.5
 websockets==9.1
 Werkzeug==1.0.1