diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6b0aa18..e187cbd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,17 @@
 # CHANGELOG
 
-## [Unreleased]
+## [1.0.0] - 2025-11-08
+
+### Added
+- Initial stable release of Playwright PHP
+- Cross-browser support (Chromium, Firefox, WebKit)
+- PHPUnit integration with fluent assertions
+- Auto-waiting locators and interactions
+- Screenshot and tracing capabilities
+- Storage state management
+
+### Changed
+- Marked package as stable (removed experimental warning)
+- Added PHPUnit 10+ requirement documentation for testing trait
+
 
diff --git a/README.md b/README.md
index d09b63e..6d0e207 100644
--- a/README.md
+++ b/README.md
@@ -10,13 +10,6 @@
 
 # Playwright PHP - Modern Browser Automation
 
-> [!IMPORTANT]  
-> This package is **experimental**. Its API may still change before the upcoming `1.0` release.  
->  
-> Curious or interested? Try it out, [share your feedback](https://github.com/playwright-php/playwright/issues), or ideas!
-
-
-
 ## About
 
 Playwright for PHP lets you launch real browsers (Chromium, Firefox, WebKit), drive pages and locators, and write reliable end‑to‑end tests — all from PHP.
@@ -136,6 +129,8 @@ $ctx = Playwright::chromium([
 
 The package provides a testing trait and fluent `expect()` assertions to write robust E2E tests.
 
+**Requirements**: PHPUnit 10.0 or higher is required to use the `PlaywrightTestCaseTrait`.
+
 Minimal example:
 
 ```php
diff --git a/composer.json b/composer.json
index b0270d6..c1afffe 100644
--- a/composer.json
+++ b/composer.json
@@ -66,7 +66,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-main": "0.x-dev"
+            "dev-main": "1.x-dev"
         }
     },
     "bin": [