diff --git a/setup.cfg b/setup.cfg
index 7d5821668f..8e2f7c8170 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [metadata]
-license_file = LICENSE.txt
+license_files = LICENSE.txt
 
 [sdist]
 formats = zip