diff --git a/mod2b-cloudndb/requirements.txt b/mod2b-cloudndb/requirements.txt
index c5fbb74..e1a9fae 100644
--- a/mod2b-cloudndb/requirements.txt
+++ b/mod2b-cloudndb/requirements.txt
@@ -1,2 +1,2 @@
-flask==1.1.2
+flask==2.3.2
 google-cloud-ndb==1.9.0