diff --git a/setup.cfg b/setup.cfg
index 5bc66c20c..eac74ea4d 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 # This includes the license file in the wheel.
-license_file = LICENSE
+license_files = LICENSE
 
 [tool:pytest]
 # Deterministic ordering for tests; useful for pytest-xdist.