diff --git a/CHANGELOG.md b/CHANGELOG.md
index 61fecdf..9f83754 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.4.0](https://github.com/ocavue/astro-theme-toggle/compare/v0.3.5...v0.4.0) (2025-01-16)
+
+
+### Features
+
+* set data-theme attribute ([#15](https://github.com/ocavue/astro-theme-toggle/issues/15)) ([c5e69b8](https://github.com/ocavue/astro-theme-toggle/commit/c5e69b8ad5bb2c5cbb8629ed5e00d96f0e5b91d2))
+
 ## [0.3.5](https://github.com/ocavue/astro-theme-toggle/compare/v0.3.4...v0.3.5) (2024-10-08)
 
 
diff --git a/package.json b/package.json
index 2a074f9..1f7e694 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "astro-theme-toggle",
   "type": "module",
-  "version": "0.3.5",
+  "version": "0.4.0",
   "packageManager": "pnpm@8.15.9",
   "description": "Add a ripple-style theme toggle animation to your Astro project with ease",
   "author": "ocavue <ocavue@gmail.com>",