diff --git a/google/services/appengine/test-fixtures/hello-world-flask/requirements.txt b/google/services/appengine/test-fixtures/hello-world-flask/requirements.txt
index f358d0ad8e4..a61bd299e3c 100644
--- a/google/services/appengine/test-fixtures/hello-world-flask/requirements.txt
+++ b/google/services/appengine/test-fixtures/hello-world-flask/requirements.txt
@@ -1,2 +1,2 @@
-Flask==1.1.1
+Flask==2.2.5
 gunicorn==20.0.4
\ No newline at end of file