diff --git a/g-cloud/requirements.txt b/g-cloud/requirements.txt
index 54cb0b2..a3d7da0 100644
--- a/g-cloud/requirements.txt
+++ b/g-cloud/requirements.txt
@@ -261,7 +261,7 @@ tqdm==4.42.1
 traitlets==4.3.3
 tweepy==3.8.0
 typing-extensions==3.7.4.2
-ujson==1.35
+ujson==5.4.0
 unicodecsv==0.14.1
 urllib3==1.25.8
 virtualenv==20.0.21