diff --git a/setup.cfg b/setup.cfg
index 4e41ccf..bdf27aa 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -8,7 +8,7 @@ description = Python bindings for wc(s)width
 long_description = file: README.md
 long_description_content_type = text/markdown
 license = MIT
-license_file = LICENSE
+license_files = LICENSE
 classifiers =
     Development Status :: 4 - Beta
     Intended Audience :: Developers