diff --git a/.github/workflows/phpstan.yml b/.github/workflows/phpstan.yml
new file mode 100644
index 0000000..3817184
--- /dev/null
+++ b/.github/workflows/phpstan.yml
@@ -0,0 +1,36 @@
+name: PHPStan Check
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Validate composer.json and composer.lock
+        run: composer validate --strict
+
+      - name: Cache Composer packages
+        id: composer-cache
+        uses: actions/cache@v3
+        with:
+          path: vendor
+          key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-php-
+
+      - name: Install dependencies
+        run: composer install --prefer-dist --no-progress
+
+      - name: Run PHPStan
+        run: composer run-script phpstan
diff --git a/composer.json b/composer.json
index 268bcee..4b4f18b 100644
--- a/composer.json
+++ b/composer.json
@@ -19,9 +19,15 @@
         "symfony/event-dispatcher" : "^4.4|^5.0|^6.0",
         "symfony/yaml": "^4.4|^5.4|^6.0"
     },
+    "require-dev": {
+        "phpstan/phpstan": "^2.1"
+    },
+    "scripts": {
+        "phpstan": "phpstan analyse DependencyInjection Event Twig -l 1"
+    },
     "autoload": {
         "psr-4": {
             "Intaro\\TwigInjectionBundle\\": ""
         }
     }
-}
+}
\ No newline at end of file