diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
new file mode 100644
index 0000000..f5980e7
--- /dev/null
+++ b/.github/workflows/codecov.yml
@@ -0,0 +1,53 @@
+on:
+  - push
+
+name: Run Codecov checks
+
+jobs:
+  code-coverage:
+    name: Code Coverage
+
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+
+        php:
+          - "8.1"
+          - "8.2"
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: "${{ matrix.php }}"
+          coverage: pcov
+          ini-values: assert.exception=1, zend.assertions=1, error_reporting=-1, log_errors_max_len=0, display_errors=On
+          tools: composer:v2, cs2pr
+
+      - name: Determine composer cache directory
+        run: echo "COMPOSER_CACHE_DIR=$(composer config cache-dir)" >> $GITHUB_ENV
+
+      - name: Cache dependencies installed with composer
+        uses: actions/cache@v3
+        with:
+          path: ${{ env.COMPOSER_CACHE_DIR }}
+          key: php${{ matrix.php }}-composer-${{ hashFiles('**/composer.json') }}
+          restore-keys: |
+            php${{ matrix.php }}-composer-
+
+      - name: Install dependencies with composer
+        run: composer install --prefer-dist --no-interaction --no-progress --optimize-autoloader --ansi
+
+      - name: Collect code coverage with PHPUnit
+        run: vendor/bin/phpunit --colors=always --coverage-clover clover.xml
+
+      - name: Send code coverage report to Codecov.io
+        uses: codecov/codecov-action@v3
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/cs-tests.yml b/.github/workflows/cs-tests.yml
index 3da9965..e4032b1 100644
--- a/.github/workflows/cs-tests.yml
+++ b/.github/workflows/cs-tests.yml
@@ -40,7 +40,7 @@ jobs:
           restore-keys: |
             php${{ matrix.php }}-composer-
       - name: Install dependencies with composer
-        run: composer update --prefer-dist --no-interaction --no-progress --optimize-autoloader --ansi
+        run: composer install --prefer-dist --no-interaction --no-progress --optimize-autoloader --ansi
 
       - name: Run phpcs checks
         run: vendor/bin/phpcs
diff --git a/.github/workflows/static-analysis.yml b/.github/workflows/static-analysis.yml
index 74550fc..134ff5b 100644
--- a/.github/workflows/static-analysis.yml
+++ b/.github/workflows/static-analysis.yml
@@ -40,7 +40,7 @@ jobs:
           restore-keys: |
             php${{ matrix.php }}-composer-
       - name: Install dependencies with composer
-        run: composer update --prefer-dist --no-interaction --no-progress --optimize-autoloader --ansi
+        run: composer install --prefer-dist --no-interaction --no-progress --optimize-autoloader --ansi
 
       - name: Run static analysis
         run: vendor/bin/psalm --no-cache --output-format=github --show-info=false --threads=4
diff --git a/README.md b/README.md
index 9c263a7..1db7437 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # dot-session
 
 ![OSS Lifecycle](https://img.shields.io/osslifecycle/dotkernel/dot-session)
-![PHP from Packagist (specify version)](https://img.shields.io/packagist/php-v/dotkernel/dot-session/5.4.0)
+![PHP from Packagist (specify version)](https://img.shields.io/packagist/php-v/dotkernel/dot-session/5.4.1)
 
 [![GitHub issues](https://img.shields.io/github/issues/dotkernel/dot-session)](https://github.com/dotkernel/dot-session/issues)
 [![GitHub forks](https://img.shields.io/github/forks/dotkernel/dot-session)](https://github.com/dotkernel/dot-session/network)
diff --git a/composer.json b/composer.json
index 034100e..f6c46c4 100644
--- a/composer.json
+++ b/composer.json
@@ -17,15 +17,15 @@
     ],
     "require": {
         "php": "~8.1.0 || ~8.2.0",
-        "psr/http-message": "^1.0.1",
         "laminas/laminas-servicemanager": "^3.11.1",
         "laminas/laminas-session": "^2.12.1",
-        "psr/http-server-middleware": "^1.0.1",
-        "laminas/laminas-stdlib": "^3.7.1"
+        "laminas/laminas-stdlib": "^3.7.1",
+        "psr/http-message": "^1.0 || ^2.0",
+        "psr/http-server-middleware": "^1.0.1"
     },
     "require-dev": {
-        "phpunit/phpunit": "^10.2",
         "laminas/laminas-coding-standard": "^2.5",
+        "phpunit/phpunit": "^10.2",
         "vimeo/psalm": "^5.13"
     },
     "autoload": {
diff --git a/phpunit.xml b/phpunit.xml
index 4d86f46..2c29023 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -2,11 +2,16 @@
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/|version|/phpunit.xsd"
          bootstrap="vendor/autoload.php"
-         colors="true"
->
+         colors="true">
     <testsuites>
         <testsuite name="Dot Session Test Suite">
             <directory>./test</directory>
         </testsuite>
     </testsuites>
+    <coverage/>
+    <source>
+        <include>
+            <directory suffix=".php">./src</directory>
+        </include>
+    </source>
 </phpunit>