diff --git a/CHANGELOG.md b/CHANGELOG.md
index e69de29..aa9656f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -0,0 +1,38 @@
+## 1.0.0 (2026-07-04)
+
+### :package: Build
+
+- [[`decf69f`](https://github.com/flex-development/mark-util-character/commit/decf69f668885eb621a9ad31600abbc7e7c35249)] **deps-dev:** Bump micromark-util-character from 2.0.1 to 2.1.1 ([#1](https://github.com/flex-development/mark-util-character/issues/1))
+- [[`e9be25d`](https://github.com/flex-development/mark-util-character/commit/e9be25d110fc0a82ead6b2c74e6d3683d43b06ae)] **deps-dev:** Bump tsx from 4.22.5 to 4.23.0 ([#3](https://github.com/flex-development/mark-util-character/issues/3))
+- [[`b287122`](https://github.com/flex-development/mark-util-character/commit/b287122b7a8ae9e19943c21817e7fae2062337fa)] **deps:** bump @flex-development/mark to 1.0.0-alpha.1
+
+### :pencil: Documentation
+
+- [[`b05315f`](https://github.com/flex-development/mark-util-character/commit/b05315f967011fa383aec4fb51e42d46ef0901ae)] use, api, types
+
+### :sparkles: Features
+
+- [[`12473a7`](https://github.com/flex-development/mark-util-character/commit/12473a7c02ab98364edae0082dce90ddc977421d)] [`checker`] custom code serialization
+- [[`15e7597`](https://github.com/flex-development/mark-util-character/commit/15e759758c918b6569a216d4a72494ef11afc5f3)] `asciiAlpha`, `asciiAlphanumeric`, `asciiDigit`
+- [[`df39c31`](https://github.com/flex-development/mark-util-character/commit/df39c316ab8191f321a57db0b9af6aaa780a25df)] `asciiAtext`, `asciiPunctuation`
+- [[`c663e5e`](https://github.com/flex-development/mark-util-character/commit/c663e5e044331ffe2fae01077fbed2103ac043c8)] `asciiControl`
+- [[`5839601`](https://github.com/flex-development/mark-util-character/commit/583960197abe004312ebac844bf5c39ccc93ed89)] `asciiHexDigit`
+- [[`c408b2a`](https://github.com/flex-development/mark-util-character/commit/c408b2a04d108259b0f46f50e3ed844770078ab0)] `checker`
+- [[`fb443ed`](https://github.com/flex-development/mark-util-character/commit/fb443edf7cfbfbf7e97864e227aab583f74dfad4)] `eol`
+- [[`74b6b09`](https://github.com/flex-development/mark-util-character/commit/74b6b0948ba827b982406d61ef76d909e4d56a91)] `eos`
+- [[`63bf539`](https://github.com/flex-development/mark-util-character/commit/63bf539aa8977dfd4bb582fedcd0a66fa4b807d3)] `htab`, `vtab`
+- [[`1c7ae18`](https://github.com/flex-development/mark-util-character/commit/1c7ae1864e22903126b3c531e73b8944d1d7165c)] `idContinue`, `idStart`
+- [[`017a809`](https://github.com/flex-development/mark-util-character/commit/017a8095b9ef6bbf8ffe4c5f3862449b49751241)] `is`
+- [[`865580a`](https://github.com/flex-development/mark-util-character/commit/865580abf0a657688efa826cbd3ee0df6d640ee4)] `lineEndingOrWhitespace`, `space`, `whitespace`
+- [[`5123dd2`](https://github.com/flex-development/mark-util-character/commit/5123dd26c6ee2f3ac7e2c4d21cd09233e569cd50)] `streamBreak`
+- [[`24fabbe`](https://github.com/flex-development/mark-util-character/commit/24fabbebbf46a3d652e2ae67fcd14deb41bf0593)] `unicodePunctuation`, `unicodeWhitespace`
+
+### :house_with_garden: Housekeeping
+
+- [[`a4e2129`](https://github.com/flex-development/mark-util-character/commit/a4e2129d8cb4fca7c50f341563da99b1db8419dc)] initial commit
+
+### :mechanical_arm: Refactors
+
+- [[`c652b7c`](https://github.com/flex-development/mark-util-character/commit/c652b7c6ac8aa9d33a1b8c96d9fe7f8ddd16121c)] `is` -> `isCode`
+
+
diff --git a/package.json b/package.json
index 71a9773..995a581 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@flex-development/mark-util-character",
   "description": "mark utility to handle character codes",
-  "version": "0.0.0",
+  "version": "1.0.0",
   "keywords": [
     "character",
     "charcode",