diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d5d9251..a76485f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,6 +9,8 @@ jobs:
         strategy:
             matrix:
                 include:
+                    - php: 8.4
+                      laravel: ^11.0
                     - php: 8.3
                       laravel: ^11.0
                     - php: 8.2
diff --git a/composer.json b/composer.json
index deffd7b..f37357e 100644
--- a/composer.json
+++ b/composer.json
@@ -15,8 +15,9 @@
     },
     "require-dev": {
         "orchestra/testbench": ">=6.15",
-        "squizlabs/php_codesniffer": "^3.5",
-        "phpunit/phpunit": "<11"
+        "phpstan/phpstan": "^2.0",
+        "phpunit/phpunit": "<11",
+        "squizlabs/php_codesniffer": "^3.5"
     },
     "autoload": {
         "psr-4": {
@@ -32,6 +33,7 @@
         "test": "./vendor/bin/phpunit --no-coverage",
         "phpsniff": "vendor/bin/phpcs --standard=\"PSR12\" ./src --ignore=./src/resources/*",
         "phpfix": "vendor/bin/phpcbf --standard=\"PSR12\" ./src --ignore=./src/resources/*",
+        "phpstan": "./vendor/bin/phpstan",
         "post-autoload-dump": [
             "@php ./vendor/bin/testbench package:discover --ansi"
         ]
diff --git a/phpstan.neon b/phpstan.neon
new file mode 100644
index 0000000..f5821d4
--- /dev/null
+++ b/phpstan.neon
@@ -0,0 +1,6 @@
+parameters:
+    level: 8
+    paths:
+      - src
+    ignoreErrors:
+      - identifier: missingType.generics
diff --git a/src/AmpersandServiceProvider.php b/src/AmpersandServiceProvider.php
index 94437c3..e7f408a 100644
--- a/src/AmpersandServiceProvider.php
+++ b/src/AmpersandServiceProvider.php
@@ -12,7 +12,7 @@
 
 class AmpersandServiceProvider extends ServiceProvider
 {
-    public function boot()
+    public function boot(): void
     {
         if ($this->app->runningInConsole()) {
             $this->publishes([
@@ -24,7 +24,7 @@ public function boot()
         }
     }
 
-    public function register()
+    public function register(): void
     {
         $this->setup();
         $this->registerRepositories();
@@ -33,20 +33,20 @@ public function register()
         $this->app->register(RouteServiceProvider::class);
     }
 
-    private function setup()
+    private function setup(): void
     {
         $this->loadViewsFrom(__DIR__ . '/resources/views', 'ampersand');
 
         $this->mergeConfigFrom(__DIR__ . '/config/ampersand.php', 'ampersand');
 
         // Add a disk to the filesystem
-        $this->app['config']->set('filesystems.disks.ampersand::posts', [
+        config()->set('filesystems.disks.ampersand::posts', [
             'driver' => 'local',
             'root' => config('ampersand.posts_path')
         ]);
 
         // Overload sheets config to avoid local conflicts
-        $this->app['config']->set('sheets.collections', [
+        config()->set('sheets.collections', [
             'posts' => [
                 'disk' => 'ampersand::posts',
                 'sheet_class' => Post::class,
@@ -57,12 +57,12 @@ private function setup()
         ]);
     }
 
-    private function registerRepositories()
+    private function registerRepositories(): void
     {
         $this->app->singleton(PostRepository::class);
     }
 
-    private function registerCommands()
+    private function registerCommands(): void
     {
         $this->commands([
             NewPost::class
diff --git a/src/Commands/NewPost.php b/src/Commands/NewPost.php
index ed2c320..ed4b795 100644
--- a/src/Commands/NewPost.php
+++ b/src/Commands/NewPost.php
@@ -20,7 +20,7 @@ public function handle(): void
         $file = sprintf('%s.%s.md', $date->format('Y-m-d'), Str::slug($title));
 
         $content = file_get_contents(__DIR__ . '/../resources/stubs/post.md');
-        $content = Str::of($content)->replace('%title%', $title)
+        $content = Str::of((string) $content)->replace('%title%', $title)
             ->replace('%date%', $date);
 
         $directory = config('ampersand.posts_path');
diff --git a/src/Http/Controllers/PostController.php b/src/Http/Controllers/PostController.php
index c307dc1..f96d491 100644
--- a/src/Http/Controllers/PostController.php
+++ b/src/Http/Controllers/PostController.php
@@ -2,6 +2,7 @@
 
 namespace Olssonm\Ampersand\Http\Controllers;
 
+use Illuminate\Http\Response;
 use Olssonm\Ampersand\Models\Post;
 use Olssonm\Ampersand\Repositories\PostRepository;
 
@@ -14,9 +15,9 @@ public function __construct(PostRepository $postRepository)
         $this->postRepository = $postRepository;
     }
 
-    public function index()
+    public function index(): Response
     {
-        return view('ampersand::index', [
+        return response()->view('ampersand::index', [
             'posts' => $this->postRepository->paginate(
                 config('ampersand.per_page'),
                 config('ampersand.page_indicator'),
@@ -24,9 +25,9 @@ public function index()
         ]);
     }
 
-    public function show(Post $post)
+    public function show(Post $post): Response
     {
-        return view('ampersand::show', [
+        return response()->view('ampersand::show', [
             'post' => $post
         ]);
     }
diff --git a/src/Models/Post.php b/src/Models/Post.php
index 5e7ddf2..258ae6c 100644
--- a/src/Models/Post.php
+++ b/src/Models/Post.php
@@ -2,10 +2,15 @@
 
 namespace Olssonm\Ampersand\Models;
 
+use AllowDynamicProperties;
 use Carbon\Carbon;
 use Olssonm\Ampersand\Repositories\PostRepository;
 use Olssonm\Ampersand\Services\Model;
 
+/**
+ * @property string $slug
+ */
+#[AllowDynamicProperties]
 class Post extends Model
 {
     public function getRouteKey(): string
@@ -28,8 +33,10 @@ public function getDateAttribute(): Carbon
         return Carbon::parse($this->attributes['date']);
     }
 
-    public static function __callStatic($name, $arguments)
+    /** @phpstan-ignore-next-line */
+    public static function __callStatic(string $name, array $arguments): mixed
     {
+        /** @phpstan-ignore-next-line */
         return call_user_func_array([app(PostRepository::class), $name], $arguments);
     }
 }
diff --git a/src/Repositories/PostRepository.php b/src/Repositories/PostRepository.php
index 9c3e2b6..bbeae59 100644
--- a/src/Repositories/PostRepository.php
+++ b/src/Repositories/PostRepository.php
@@ -20,12 +20,13 @@ public function find(string $slug): Post
     {
         $post = $this->all()->where('slug', $slug)->first();
 
+        /** @phpstan-ignore argument.type */
         throw_if(!$post, (new ModelNotFoundException())->setModel(Post::class, $slug));
 
         return $post;
     }
 
-    public function paginate($perPage = 10, $pageName = 'page'): LengthAwarePaginator
+    public function paginate(int $perPage = 10, string $pageName = 'page'): LengthAwarePaginator
     {
         $page = LengthAwarePaginator::resolveCurrentPage($pageName, 1);
 
diff --git a/src/Services/Model.php b/src/Services/Model.php
index a3a160d..0e91665 100644
--- a/src/Services/Model.php
+++ b/src/Services/Model.php
@@ -9,10 +9,12 @@
 
 abstract class Model extends Sheet implements UrlRoutable
 {
+    /** @phpstan-ignore return.missing */
     public function resolveRouteBinding($value, $field = null)
     {
     }
 
+    /** @phpstan-ignore return.missing */
     public function resolveChildRouteBinding($childType, $value, $field)
     {
     }