diff --git a/setup.cfg b/setup.cfg
index a8be8d2..9c54757 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -2,7 +2,7 @@
 dry-run = 1
 
 [metadata]
-description-file=README.rst
+description_file=README.rst
 
 [bdist_wheel]
 universal = 1