diff --git a/release_note_en.md b/release_note_en.md
index 58b615e..c76778e 100644
--- a/release_note_en.md
+++ b/release_note_en.md
@@ -1,3 +1,7 @@
+v0.5.0
+======
+May 3, 2025
+
 - Refactor: split code into two packages: (Thanks to [@rwinkhart])
     - `main` package for the CLI: `github.com/hymkor/lispect/cmd/lispect`
     - `lispect` package for library use: `github.com/hymkor/lispect`
diff --git a/release_note_ja.md b/release_note_ja.md
index 20a302b..d4118a4 100644
--- a/release_note_ja.md
+++ b/release_note_ja.md
@@ -1,3 +1,7 @@
+v0.5.0
+======
+May 3, 2025
+
 - ソースを二つのパッケージへ分割した (Thanks to [@rwinkhart])
     - `main` パッケージ(実行ファイル用): `github.com/hymkor/lispect/cmd/lispect`
     - `lispect` パッケージ(ライブラリ用): `github.com/hymkor/lispect`