diff --git a/pyproject.toml b/pyproject.toml
index 2be07d4..deae774 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,7 +21,7 @@ classifiers = [
     # 系统支持.
     "Operating System :: OS Independent",
 ]
-license = "MPL-2.0"
+license = { text = "MPL-2.0" }
 dynamic = ["version"]
 
 [build-system]