diff --git a/setup.cfg b/setup.cfg
index 8d68f82..557f8e6 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [metadata]
-description-file = README.rst
+description_file = README.rst
 
 [bdist_wheel]
 universal = 1