diff --git a/.gitattributes b/.gitattributes
index ad93b42..6da0f41 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -14,4 +14,5 @@
 .gitignore export-ignore
 .styleci.yml export-ignore
 CHANGELOG.md export-ignore
+phpstan.neon.dist export-ignore
 phpunit.xml.dist export-ignore
diff --git a/.github/workflows/static-analysis.yml b/.github/workflows/static-analysis.yml
new file mode 100644
index 0000000..453d8a6
--- /dev/null
+++ b/.github/workflows/static-analysis.yml
@@ -0,0 +1,41 @@
+name: static analysis
+
+on:
+  push:
+    branches:
+      - master
+      - '*.x'
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  tests:
+    runs-on: ubuntu-22.04
+
+    strategy:
+      fail-fast: true
+
+    name: Static Analysis
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.2
+          tools: composer:v2
+          coverage: none
+
+      - name: Install dependencies
+        uses: nick-fields/retry@v2
+        with:
+          timeout_minutes: 5
+          max_attempts: 5
+          command: composer update --prefer-stable --prefer-dist --no-interaction --no-progress
+
+      - name: Execute type checking
+        run: vendor/bin/phpstan
diff --git a/composer.json b/composer.json
index a75eaf8..424c073 100644
--- a/composer.json
+++ b/composer.json
@@ -19,6 +19,8 @@
     },
     "require-dev": {
         "mockery/mockery": "~1.3.3|^1.4.2",
+        "orchestra/testbench": "^4.0|^5.0|^6.0|^6.0|^7.0|^8.0",
+        "phpstan/phpstan": "^1.10",
         "phpunit/phpunit": "^8.5.8|^9.3.3"
     },
     "suggest": {
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
new file mode 100644
index 0000000..a52223c
--- /dev/null
+++ b/phpstan.neon.dist
@@ -0,0 +1,10 @@
+parameters:
+  paths:
+    - config
+    - src
+
+  level: 0
+
+  ignoreErrors:
+    - "#Unsafe usage of new static\\(\\)#"
+    - "#Class Laravel\\\\Lumen\\\\Application not found.#"
diff --git a/src/TinkerCaster.php b/src/TinkerCaster.php
index 8b08aa0..be3544e 100644
--- a/src/TinkerCaster.php
+++ b/src/TinkerCaster.php
@@ -129,7 +129,7 @@ public static function castModel($model)
         $hidden = array_flip($model->getHidden());
 
         $appends = (function () {
-            return array_combine($this->appends, $this->appends);
+            return array_combine($this->appends, $this->appends); // @phpstan-ignore-line
         })->bindTo($model, $model)();
 
         foreach ($appends as $appended) {