diff --git a/requirements.txt b/requirements.txt
index c7d542e..a375b15 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@
 -i https://pypi.org/simple
 click==7.1.2; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
 flask-cors==3.0.10
-flask==1.1.2
+flask==2.3.2
 gunicorn==20.0.4
 itsdangerous==1.1.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
 jinja2==2.11.3; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'