diff --git a/requirements.txt b/requirements.txt
index 4373e9a..7564b8c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,5 +4,5 @@ allennlp==1.1.0
 transformers==3.4.0
 torch==1.6.0
 numpy==1.18.5
-ujson==1.35
+ujson==5.4.0
 nltk==3.5