diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..b3ed81a
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,17 @@
+# Changelog
+
+## 1.0.0 (2025-05-25)
+
+
+### ⚠ BREAKING CHANGES
+
+* migrate to TypeScript and ESM
+
+### Features
+
+* isEmpty ([1ad9702](https://github.com/mljs/tree-set/commit/1ad97026e89257e3ba1b4a9e07295b2b345e8255))
+
+
+### Code Refactoring
+
+* migrate to TypeScript and ESM ([80b43e1](https://github.com/mljs/tree-set/commit/80b43e1623ecc320aae59f1ea362d0c971144c8e))
diff --git a/package.json b/package.json
index ea8ec05..a8df4bd 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ml-tree-set",
-  "version": "0.1.0",
+  "version": "1.0.0",
   "description": "A JavaScript emulator of the TreeSet Java class",
   "type": "module",
   "exports": "./lib/index.js",