diff --git a/setup.cfg b/setup.cfg
index d85ffbc3..f10a9203 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -20,7 +20,7 @@ classifiers =
 zip_safe = False
 include_package_data = True
 packages = find:
-python_requires = 3.9
+python_requires = ==3.9.* 
 
 [options.entry_points]
 console_scripts =