diff --git a/setup.cfg b/setup.cfg
index 5873c0f..d43fec2 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [metadata]
-description-file = README.rst
+description_file = README.rst
 
 [mypy]
 check_untyped_defs = true