diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..02aae24
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,28 @@
+name: CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.4'
+          extensions: mbstring
+          coverage: none
+          tools: composer:v2
+      - name: Validate composer.json
+        run: composer validate --no-check-publish --no-check-lock
+      - name: Install dependencies
+        run: composer update --prefer-dist --no-progress --no-interaction
+      - name: Run tests
+        run: vendor/bin/phpunit --no-coverage
diff --git a/README.md b/README.md
index f721547..ffa838f 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ FastD Event 是一个轻量级、高性能的 PSR-14 兼容事件调度器实现
 
 ## 环境要求
 
-- PHP >= 8.2
+- PHP >= 8.4
 
 ## 特性
 
diff --git a/composer.json b/composer.json
index 94350d9..f22e9ea 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
         }
     ],
     "require": {
-        "php": ">=8.2",
+        "php": ">=8.4",
         "psr/event-dispatcher": "^1.0"
     },
     "require-dev": {