diff --git a/src/shione/config.toml b/src/shione/config.toml
index 8903a62..f5b7de5 100644
--- a/src/shione/config.toml
+++ b/src/shione/config.toml
@@ -1,5 +1,5 @@
 name = "shione"
-copyright = "2023, renken"
+copyright = "2024, renken"
 author = "renken"
 plantuml_config = "plantuml.cfg"
 description_formatted = "managed by {author}"