diff --git a/requirements.txt b/requirements.txt
index 8b057be..5a71614 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -101,7 +101,7 @@ torchtext==0.3.1
 tqdm==4.28.1
 traitlets==4.3.2
 typing==3.6.6
-ujson==1.35
+ujson==5.4.0
 Unidecode==1.0.23
 urllib3==1.24.1
 wcwidth==0.1.7