diff --git a/pyproject.toml b/pyproject.toml
index ac0d2b9..cb6a203 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,6 +24,9 @@ Issues = "https://github.com/nonannet/copapy/issues"
 requires = ["setuptools>=61.0", "wheel"]
 build-backend = "setuptools.build_meta"
 
+tool.setuptools]
+license-files = []
+
 [tool.setuptools.packages.find]
 where = ["src"]