diff --git a/requirements.txt b/requirements.txt
index 49c4922..976ed6f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -75,7 +75,7 @@ toolz==0.9.0
 tornado==5.1
 tqdm==4.25.0
 traitlets==4.3.2
-ujson==1.35
+ujson==5.2.0
 Unidecode==1.0.22
 urllib3==1.23
 wcwidth==0.1.7