diff --git a/pyproject.toml b/pyproject.toml
index c21eb1ea..c700d2a7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,6 +10,7 @@ readme = "README.md"
 authors = [
     { name = "Azalea Gui", email = "me@hydev.org" },
 ]
+requires-python = ">=3.7"
 license = "MIT"
 classifiers = [
     "License :: OSI Approved :: MIT License",