diff --git a/datastore/cloud-ndb/requirements.txt b/datastore/cloud-ndb/requirements.txt
index 35949d51f53..927c8ab88c0 100644
--- a/datastore/cloud-ndb/requirements.txt
+++ b/datastore/cloud-ndb/requirements.txt
@@ -1,3 +1,3 @@
 google-cloud-ndb==2.3.4
-Flask==3.0.3
+Flask==3.1.3
 Werkzeug==3.0.6