diff --git a/setup.py b/setup.py
index f1e715ff..75bb2c16 100644
--- a/setup.py
+++ b/setup.py
@@ -44,6 +44,7 @@ def get_long_description():
     package_data={
         'pyvlx': ['py.typed'],
     },
+    python_requires='>=3.9',
     install_requires=REQUIRES,
     keywords="velux KLF 200 home automation",
     zip_safe=False,