diff --git a/eris/setup.py b/eris/setup.py
index 0e05c81..fbf8d9f 100755
--- a/eris/setup.py
+++ b/eris/setup.py
@@ -16,6 +16,7 @@ setup(name="eris",
       author="Andrew Hamilton",
       author_email="and_hamilton@yahoo.com",
       license="Artistic 2.0",
+      python_requires=">=3.9.0",
       packages=["eris"],
       py_modules=["lscolors", "sorted_collection"],
       package_data={"eris": ["LS_COLORS.sh", "tools.toml"]},