diff --git a/test/e2e/containers/fake_datadog/app/requirements.txt b/test/e2e/containers/fake_datadog/app/requirements.txt
index 58816311a77565..1ed9e8074d9c18 100644
--- a/test/e2e/containers/fake_datadog/app/requirements.txt
+++ b/test/e2e/containers/fake_datadog/app/requirements.txt
@@ -1,5 +1,5 @@
 Flask==1.1.1
 gunicorn==19.7.1
-ujson==1.35
+ujson==5.2.0
 pymongo==3.6.1
 prometheus-client==0.2.0