diff --git a/lang-model-image/content/requirements.txt b/lang-model-image/content/requirements.txt
index a18bf6b..f4f166b 100644
--- a/lang-model-image/content/requirements.txt
+++ b/lang-model-image/content/requirements.txt
@@ -1,4 +1,4 @@
 nltk==3.3
 numpy==1.15.0
-ujson==1.35
+ujson==5.4.0
 pymongo==3.7.2
\ No newline at end of file