diff --git a/.github/workflows/CI.yaml b/.github/workflows/CI.yaml
index 323becc..c076143 100644
--- a/.github/workflows/CI.yaml
+++ b/.github/workflows/CI.yaml
@@ -10,6 +10,10 @@ on:
 permissions:
   contents: read
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   cs:
     name: "Code style"
@@ -18,12 +22,11 @@ jobs:
       - name: "Git: checkout"
         uses: actions/checkout@v4
 
-      - name: "PHP: setup 8.3"
+      - name: "PHP: setup 8.2"
         uses: shivammathur/setup-php@v2
         with:
-          php-version: '8.3'
+          php-version: '8.2'
           coverage: none
-          tools: php-cs-fixer
 
       - name: "Composer: validate"
         run: composer validate --strict
@@ -31,9 +34,6 @@ jobs:
       - name: "Composer: install"
         run: composer install --prefer-dist --no-interaction --no-progress
 
-      - name: "Php-CS-Fixer: version"
-        run: vendor/bin/php-cs-fixer -V
-
       - name: "Php-CS-Fixer: check"
         run: vendor/bin/php-cs-fixer fix --diff --dry-run
 
@@ -48,16 +48,13 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           php-version: '8.4'
-          tools: phpstan
+          coverage: none
 
       - name: "Composer: install"
         run: composer install --prefer-dist --no-interaction --no-progress
 
-      - name: "PHPStan: version"
-        run: phpstan --version
-
       - name: "PHPStan: analyze"
-        run: phpstan
+        run: vendor/bin/phpstan
 
   unit-tests:
     name: "Unit Tests (PHP ${{ matrix.php-version }})"
@@ -74,14 +71,7 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php-version }}
-          coverage: pcov
-          tools: phpunit
-          
-      # Force PHPUnit 11.5 on PHP 8.2 to keep support for it
-      # https://phpunit.de/supported-versions.html
-      - name: "PHPUnit: install 11.5"      
-        if: matrix.php-version == '8.2'
-        run: composer require --no-update phpunit/phpunit:^11.5
+          coverage: none
 
       - name: "Composer: install (${{ matrix.dependencies }})"
         run: |
@@ -91,11 +81,8 @@ jobs:
             composer install --prefer-dist --no-interaction --no-progress
           fi
 
-      - name: "PHPUnit: version"
-        run: phpunit --version
-
       - name: "PHPUnit: tests"
-        run: phpunit --testsuite=unit
+        run: vendor/bin/phpunit --no-coverage --testsuite=unit
 
   integration-tests:
     name: "Integration Tests (PHP ${{ matrix.php-version }} ${{ matrix.dependencies }})"
@@ -121,12 +108,6 @@ jobs:
         with:
           php-version: ${{ matrix.php-version }}
           coverage: pcov
-          tools: phpunit
-
-      # Force PHPUnit 11.5 on PHP 8.2 to keep support for it
-      # https://phpunit.de/supported-versions.html
-      - if: matrix.php-version == '8.2'
-        run: composer require --no-update phpunit/phpunit:^11.5
 
       - name: "Node: setup"
         uses: actions/setup-node@v4
@@ -144,9 +125,6 @@ jobs:
       - name: "Playwright: install browsers"
         run: php bin/playwright-install --browsers
 
-      - name: "PHPUnit: version"
-        run: vendor/bin/phpunit --version
-
       - name: "PHPUnit: all tests with coverage"
         run: vendor/bin/phpunit --coverage-clover=coverage.xml
 
diff --git a/composer.json b/composer.json
index c1afffe..d63cd1b 100644
--- a/composer.json
+++ b/composer.json
@@ -40,7 +40,7 @@
         "friendsofphp/php-cs-fixer": "^3.40",
         "monolog/monolog": "^3.9",
         "phpstan/phpstan": "^2.1",
-        "phpunit/phpunit": "^12.3",
+        "phpunit/phpunit": "^11.5",
         "symfony/var-dumper": "^6.4 || ^7.3 || ^8.0"
     },
     "minimum-stability": "stable",