diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index e18ee07..37fcefa 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.0.0"
+  ".": "1.0.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 41f8856..85a5535 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,18 @@
 # Changelog
 
+## 1.0.0 (2025-11-20)
+
+
+### Features
+
+* **installer:** make phpcs-composer-installer optional ([ea9b07a](https://github.com/WPTechnix/wordpress-coding-standards/commit/ea9b07a09b9448fb8f348413e3e404894b370ac0))
+* **ruleset:** expand WPTechnix WordPress ruleset ([0c32f20](https://github.com/WPTechnix/wordpress-coding-standards/commit/0c32f20b3a450d49654205ee6c7a16bf154c63ea))
+
+## Changelog
+
 All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),  
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## Unreleased
\ No newline at end of file
+## Unreleased