diff --git a/exercises/requirements.txt b/exercises/requirements.txt
index 4329fa9..28f08cd 100644
--- a/exercises/requirements.txt
+++ b/exercises/requirements.txt
@@ -7,5 +7,5 @@ html5lib==0.999999999
 MySQL-python==1.2.5
 requests==2.11.1
 gunicorn==19.6.0
-ujson==1.35
+ujson==5.2.0
 statsd==3.2.1