diff --git a/source/python/requirements.txt b/source/python/requirements.txt
index dc7c804..4c781d1 100644
--- a/source/python/requirements.txt
+++ b/source/python/requirements.txt
@@ -114,7 +114,7 @@ toolz==0.10.0
 tornado==6.0.3
 tqdm==4.40.2
 traitlets==4.3.3
-ujson==1.35
+ujson==5.4.0
 Unidecode==1.1.1
 urllib3==1.25.7
 uWSGI==2.0.18