diff --git a/pyproject.toml b/pyproject.toml
index 25efdcd..c2263e0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,6 +9,7 @@ authors = [
 ]
 description = "The OCR evaluation tool"
 readme = "README.md"
+license.file = "LICENSE"
 requires-python = ">=3.8"
 keywords = ["qurator", "ocr", "evaluation", "ocr-d"]