diff --git a/flexible_src/requirements.txt b/flexible_src/requirements.txt
index b62e1be..878fe98 100644
--- a/flexible_src/requirements.txt
+++ b/flexible_src/requirements.txt
@@ -1,3 +1,3 @@
-flask==1.0
+flask==2.3.2
 google-cloud==0.20.0
 gunicorn==19.6.0