diff --git a/setup.py b/setup.py
index b0a4b90..f8e7b8b 100644
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,7 @@
     packages=['oauthdemo'],
     include_package_data=True,
     install_requires=[
-        'flask==1.1.1',
+        'flask==2.3.2',
         'pylint',
         'pytest',
         'pytest-cov',