diff --git a/requirements.txt b/requirements.txt
index cbd39c2..2d8f73f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ sphinxcontrib-websupport==1.0.1
 termcolor==1.1.0
 typed-ast==1.0.4
 typing==3.6.1
-ujson==1.35
+ujson==5.4.0
 urllib3==1.21.1
 uvloop==0.8.0
 watchdog==0.8.3