diff --git a/.gitattributes b/.gitattributes
index ed6dadf..0b3245f 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,5 +1,6 @@
 /tests export-ignore
 /.github export-ignore
+/.phpunit.cache
 .gitattributes export-ignore
 .gitignore export-ignore
 phpunit.php export-ignore
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
new file mode 100644
index 0000000..12b0547
--- /dev/null
+++ b/.github/workflows/coverage.yml
@@ -0,0 +1,26 @@
+name: Code Coverage
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  coverage:
+    name: Code Coverage
+    runs-on: 'ubuntu-latest'
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v3
+      - name: PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.1'
+          extensions: openssl
+          coverage: xdebug
+      - name: Install Dependencies
+        run: composer require php-di/php-di
+      - name: Run Coverage
+        run: vendor/bin/phpunit --coverage-clover coverage.xml
+      - name: Upload Coverage
+        uses: codecov/codecov-action@v3
diff --git a/.github/workflows/Linter.yml b/.github/workflows/linter.yml
similarity index 74%
rename from .github/workflows/Linter.yml
rename to .github/workflows/linter.yml
index 7e8ea7f..7628f88 100644
--- a/.github/workflows/Linter.yml
+++ b/.github/workflows/linter.yml
@@ -1,23 +1,22 @@
 name: Coding Style
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
 
 jobs:
   php_cs_fixer:
     name: php_cs_fixer
-    runs-on: "${{ matrix.os }}"
-    strategy:
-      fail-fast: true
-      matrix:
-        os: [ubuntu-latest]
-        php-version:
-          - 8.1
+    runs-on: "ubuntu-latest"
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: ${{ matrix.php-version }}
+          php-version: '8.1'
+          coverage: none
       - name: Install Dependencies
         run: composer install --no-progress
       - name: Run PHP-CS-Fixer
@@ -35,11 +34,12 @@ jobs:
           - 8.1
     steps:
       -   name: Checkout Code
-          uses: actions/checkout@v2
+          uses: actions/checkout@v3
       -   name: PHP
           uses: shivammathur/setup-php@v2
           with:
             php-version: ${{ matrix.php-version }}
+            coverage: none
       -   name: Install Dependencies
           run: composer install --no-progress
       -   name: Run PHP-Stan
diff --git a/.github/workflows/Tester.yml b/.github/workflows/tester.yml
similarity index 91%
rename from .github/workflows/Tester.yml
rename to .github/workflows/tester.yml
index 25f95c0..6da3b20 100644
--- a/.github/workflows/Tester.yml
+++ b/.github/workflows/tester.yml
@@ -1,5 +1,9 @@
 name: Tester
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
 
 jobs:
   PHPUnit:
@@ -19,12 +23,13 @@ jobs:
           - 8.1
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: PHP
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php-version }}
           extensions: openssl
+          coverage: none
       - name: Install Dependencies
         run: composer install --no-progress
       - name: Laravel Framework
diff --git a/.gitignore b/.gitignore
index ad694e3..869d21a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ vendor/
 composer.lock
 *.DS_Store
 .idea/
+.phpunit.cache/
diff --git a/README.md b/README.md
index 230ec1b..7c2fa06 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,9 @@
 <p align="center">
-      <a href="https://pay.yansongda.cn" target="_blank" rel="noopener noreferrer"><img width="200" src="https://cdn.jsdelivr.net/gh/yansongda/pay-site/.vuepress/public/images/logo.png" alt="Logo"></a>
+      <a href="https://pay.yansongda.cn" target="_blank" rel="noopener noreferrer"><img width="200" src="https://pay.yansongda.cn/images/logo.png" alt="Logo"></a>
 </p>
 
 <p align="center">
+    <a href="https://codecov.io/gh/yansongda/pay" ><img src="https://codecov.io/gh/yansongda/pay/branch/master/graph/badge.svg?token=tYMV0YT5jj"/></a>
     <a href="https://scrutinizer-ci.com/g/yansongda/pay/?branch=master"><img src="https://scrutinizer-ci.com/g/yansongda/pay/badges/quality-score.png?b=master" alt="scrutinizer"></a>
     <a href="https://github.com/yansongda/pay/actions"><img src="https://github.com/yansongda/pay/workflows/Linter/badge.svg" alt="Linter Status"></a>
     <a href="https://github.com/yansongda/pay/actions"><img src="https://github.com/yansongda/pay/workflows/Tester/badge.svg" alt="Tester Status"></a>
diff --git a/phpunit.xml b/phpunit.xml
index f53075c..0a205a3 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -1,17 +1,25 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit backupGlobals="false"
-         backupStaticAttributes="false"
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.5/phpunit.xsd"
          bootstrap="vendor/autoload.php"
-         colors="true"
-         convertErrorsToExceptions="true"
-         convertNoticesToExceptions="true"
-         convertWarningsToExceptions="true"
-         processIsolation="false"
-         stopOnFailure="false"
-         cacheResult="false">
-  <testsuites>
-    <testsuite name="tests">
-      <directory suffix="Test.php">./tests</directory>
-    </testsuite>
-  </testsuites>
+         executionOrder="depends,defects"
+         beStrictAboutCoversAnnotation="true"
+         beStrictAboutOutputDuringTests="true"
+         beStrictAboutTodoAnnotatedTests="true"
+         convertDeprecationsToExceptions="true"
+         failOnRisky="true"
+         failOnWarning="true"
+         verbose="true">
+    <testsuites>
+        <testsuite name="default">
+            <directory suffix="Test.php">tests</directory>
+        </testsuite>
+    </testsuites>
+
+    <coverage cacheDirectory=".phpunit.cache/code-coverage"
+              processUncoveredFiles="true">
+        <include>
+            <directory suffix=".php">src</directory>
+        </include>
+    </coverage>
 </phpunit>