diff --git a/pyproject.toml b/pyproject.toml
index a10c19a19..254a2610d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,7 +22,8 @@ version = "31.2.0"
 description = "Client library for the Google Ads API"
 readme = "./README.rst"
 requires-python = ">=3.9, <3.15"
-license = { file = "LICENSE" }
+license = "Apache-2.0"
+license-files = ["LICENSE"]
 authors = [
     {name = "Google LLC", email = "googleapis-packages@google.com"}
 ]