diff --git a/lib/py/setup.cfg b/lib/py/setup.cfg
index c9ed0ae..3b1b026 100644
--- a/lib/py/setup.cfg
+++ b/lib/py/setup.cfg
@@ -1,6 +1,6 @@
 [install]
 optimize = 1
 [metadata]
-description-file = README.md
+description_file = README.md
 [flake8]
 max-line-length = 100