diff --git a/requirements.txt b/requirements.txt
index 12eab52..77d6816 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -76,7 +76,7 @@ toolz==0.9.0
 tqdm==4.28.1
 Twisted==18.9.0
 typing==3.6.6
-ujson==1.35
+ujson==5.4.0
 urllib3==1.24
 visitor==0.1.3
 Werkzeug==0.14.1