diff --git a/pyproject.toml b/pyproject.toml
index e70ee0a8ae..bcc1fa79e1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ name = "calibre"
 description = "The one stop solution to all your e-book needs"
 readme = "README.md"
 requires-python = ">=3.14"
-license = {text="GPL-3.0-only"}
+license = "GPL-3.0-only"
 dynamic = ["version"]
 dependencies = [
 	"six == 1.17.0",