diff --git a/requirements.txt b/requirements.txt
index e7432fd..43b2b8a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 Hug==2.3.2
 Pillow==4.3.0
 python-slugify==1.2.4
-ujson==1.35
+ujson==5.4.0
 zappa==0.45.1
 bugsnag==3.3.0