diff --git a/server/requirements.txt b/server/requirements.txt
index 1b9e29f..47bccf2 100644
--- a/server/requirements.txt
+++ b/server/requirements.txt
@@ -1,6 +1,6 @@
 git+https://github.com/jamalex/notion-py.git
 flake8==3.7.7
-Flask==1.0.3
+Flask==2.3.2
 gunicorn==19.9.0
 Flask-APScheduler==1.11.0
 requests==2.22.0