diff --git a/requirements.txt b/requirements.txt
index 1848b28..f1b6631 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ scikit-learn==0.19.2
 scikit-video==1.1.10
 svgwrite==1.1.12
 tables==3.4.4
-ujson==1.35
+ujson==5.4.0
 jsonschema==2.6.0
 scipy==1.1.0
 numpy==1.14.5