diff --git a/pyproject.toml b/pyproject.toml
index 60c5c30..f355aa8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,6 +10,10 @@ description = "A conservative interactive spell checker for source code."
 
 version = "2.3.0"
 license = "GPL-2.0-only"
+license-files = [
+     "COPYING.txt",
+     "SCOWL-LICENSE.txt"
+]
 readme  = "README.rst"
 
 classifiers = [