diff --git a/setup.cfg b/setup.cfg
index 664c1d3..83ab336 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -34,7 +34,7 @@ install_requires =
     awkward>=2
     numpy>=1.13.3
     vector
-python_requires = >=3.8
+python_requires = >=3.9
 include_package_data = True
 package_dir =
     =src