diff --git a/.github/actions/install/action.yaml b/.github/actions/install/action.yaml
index bc141e4f..1d3f95df 100644
--- a/.github/actions/install/action.yaml
+++ b/.github/actions/install/action.yaml
@@ -10,6 +10,10 @@ inputs:
     description: 'Install dev dependencies'
     required: false
     default: ''
+  need_phar:
+    description: 'Install phar dependencies'
+    required: false
+    default: 'true'
 
 runs:
   using: "composite"
@@ -28,3 +32,4 @@ runs:
       run: composer install --prefer-dist --no-progress --optimize-autoloader --classmap-authoritative
       shell: bash
       working-directory: tools/phar
+      if: ${{ inputs.need_phar == 'true' }}
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b0a81668..764e38b8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,10 +29,13 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: PHP-CS-Fixer
-        uses: docker://ghcr.io/php-cs-fixer/php-cs-fixer:3-php8.3
+      - uses: ./.github/actions/install
         with:
-          args: --config=.php-cs-fixer.php check --diff
+          php-version: "8.3"
+          need_phar: 'false'
+
+      - name: PHP CS Fixer
+        run: bin/castor cs
 
   phpstan:
     name: Static Analysis
@@ -41,10 +44,13 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - uses: ./.github/actions/install
+        with:
+          php-version: "8.3"
+          need_phar: 'false'
+
       - name: PHPStan
-        uses: docker://oskarstark/phpstan-ga
-        env:
-          REQUIRE_DEV: true
+        run: bin/castor phpstan
 
   phpunit:
     name: "PHPUnit on ${{ matrix.php }} / Castor from ${{ matrix.castor.method }}"
diff --git a/tools/php-cs-fixer/castor.php b/tools/php-cs-fixer/castor.php
index 73a9e0e9..ec23ab89 100644
--- a/tools/php-cs-fixer/castor.php
+++ b/tools/php-cs-fixer/castor.php
@@ -11,6 +11,10 @@
 #[AsTask(description: 'Fix CS', aliases: ['cs'])]
 function cs(bool $dryRun = false): int
 {
+    if (!file_exists(__DIR__ . '/vendor/autoload.php')) {
+        install();
+    }
+
     $command = [
         __DIR__ . '/vendor/bin/php-cs-fixer',
         'fix',
diff --git a/tools/phpstan/castor.php b/tools/phpstan/castor.php
index 188b3681..d07f5cbc 100644
--- a/tools/phpstan/castor.php
+++ b/tools/phpstan/castor.php
@@ -11,6 +11,10 @@
 #[AsTask(description: 'Run PHPStan', aliases: ['phpstan'])]
 function phpstan(bool $generateBaseline = false): int
 {
+    if (!file_exists(__DIR__ . '/vendor/autoload.php')) {
+        install();
+    }
+
     $command = [
         __DIR__ . '/vendor/bin/phpstan', '-v',
     ];