diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index d936b2a..88ca9be 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -167,7 +167,7 @@ jobs:
           composer require "laravel/framework:${{ matrix.laravel }}" --no-interaction --no-update
           composer require "phpunit/phpunit:${{ matrix.phpunit }}" --no-interaction --no-update
           composer require "orchestra/testbench:${{ matrix.testbench }}" --no-interaction --no-update
-          composer require "nunomaduro/larastan:${{ matrix.larastan }}" --no-interaction --no-update
+          composer require "larastan/larastan:${{ matrix.larastan }}" --no-interaction --no-update
           composer update --prefer-dist --no-interaction
           composer dump
 
diff --git a/composer.json b/composer.json
index cd758f5..b85fdc5 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
     },
     "require-dev": {
         "laravel/pint": "^1.2",
-        "nunomaduro/larastan": "^2.0",
+        "larastan/larastan": "^2.0",
         "orchestra/testbench": "^7.11.0",
         "phpunit/phpunit": "^9.5.10"
     },
@@ -41,13 +41,16 @@
     },
     "scripts": {
         "larastan": [
-            "./vendor/bin/phpstan analyse"
+            "./vendor/bin/phpstan analyse src"
         ],
         "pint": [
             "./vendor/bin/pint"
         ],
         "pint-check": [
             "./vendor/bin/pint --test"
+        ],
+        "test": [
+            "./vendor/bin/phpunit tests"
         ]
     },
     "config": {
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
new file mode 100644
index 0000000..064393b
--- /dev/null
+++ b/phpstan.neon.dist
@@ -0,0 +1,12 @@
+includes:
+    - vendor/larastan/larastan/extension.neon
+
+parameters:
+    paths:
+        - config
+        - src
+
+    level: max
+
+    checkMissingIterableValueType: true
+    treatPhpDocTypesAsCertain: false
diff --git a/src/Action.php b/src/Action.php
index 7ce5d31..e2a7ee2 100644
--- a/src/Action.php
+++ b/src/Action.php
@@ -2,6 +2,7 @@
 
 namespace Kirschbaum\Actions;
 
+use Exception;
 use Illuminate\Support\Traits\Macroable;
 use Kirschbaum\Actions\Contracts\Actionable;
 use Kirschbaum\Actions\Exceptions\ActionableInterfaceNotFoundException;
@@ -13,6 +14,8 @@ class Action
 
     /**
      * Arguments to pass into the action's constructor.
+     *
+     * @var array<int|string, mixed>
      */
     protected array $arguments;
 
@@ -21,7 +24,7 @@ class Action
      *
      * @param  mixed  ...$arguments
      *
-     * @return mixed
+     * @return mixed|void
      *
      * @throws Throwable
      */
@@ -35,6 +38,9 @@ public function act(string $action, ...$arguments)
     /**
      * Initiate the given action if the given condition is true.
      *
+     * @template TValue
+     *
+     * @param  TValue  $condition
      * @param  mixed  ...$arguments
      *
      * @return mixed|void
@@ -53,6 +59,9 @@ public function actWhen($condition, string $action, ...$arguments)
     /**
      * Initiate the action if the given condition is false.
      *
+     * @template TValue
+     *
+     * @param  TValue  $condition
      * @param  mixed  ...$arguments
      *
      * @return mixed|void
@@ -80,7 +89,11 @@ protected function handle(string $action)
     {
         $action = new $action(...$this->arguments);
 
-        $this->checkActionForInterface($action);
+        throw_unless(
+            $action instanceof Actionable,
+            ActionableInterfaceNotFoundException::class
+        );
+
         $this->raiseBeforeActionEvent($action);
 
         try {
@@ -103,20 +116,7 @@ protected function actionHasFailedMethod(Actionable $action): bool
     }
 
     /**
-     * Determine if the action has the proper interface.
-     *
-     * @throws Throwable
-     */
-    protected function checkActionForInterface($action): void
-    {
-        throw_unless(
-            $action instanceof Actionable,
-            ActionableInterfaceNotFoundException::class
-        );
-    }
-
-    /**
-     * Dispatch appropriate action event.
+     * Dispatch the appropriate action event.
      */
     protected function dispatchEvent(string $event, Actionable $action): void
     {
@@ -140,19 +140,28 @@ protected function eventExists(Actionable $action, string $event): bool
     /**
      * Fire failure event and/or call failed action method if they exist.
      *
-     *
-     * @return mixed
+     * @return mixed|void
      *
      * @throws Throwable
      */
     protected function handleFailure(Actionable $action, Throwable $exception)
     {
         if ($this->actionHasFailedMethod($action)) {
-            return $action->failed($exception);
+            /**
+             * @var callable $callback
+             */
+            $callback = [$action, 'failed'];
+
+            return call_user_func($callback, $exception);
         }
 
         if ($this->hasCustomException($action)) {
-            $exception = $action->exception;
+            $properties = get_object_vars($action);
+
+            /**
+             * @var Exception $exception
+             */
+            $exception = $properties['exception'];
 
             throw new $exception();
         }
@@ -161,7 +170,7 @@ protected function handleFailure(Actionable $action, Throwable $exception)
     }
 
     /**
-     * Check if action has a custom exception.
+     * Check if the action has a custom exception.
      */
     protected function hasCustomException(Actionable $action): bool
     {
@@ -170,7 +179,7 @@ protected function hasCustomException(Actionable $action): bool
     }
 
     /**
-     * Raise the before action event.
+     * Raise the "before" action event.
      */
     protected function raiseBeforeActionEvent(Actionable $action): void
     {
@@ -178,7 +187,7 @@ protected function raiseBeforeActionEvent(Actionable $action): void
     }
 
     /**
-     * Raise the after action event.
+     * Raise the "after" action event.
      */
     protected function raiseAfterActionEvent(Actionable $action): void
     {
diff --git a/src/ActionsServiceProvider.php b/src/ActionsServiceProvider.php
index 16cd3c9..dca5de6 100644
--- a/src/ActionsServiceProvider.php
+++ b/src/ActionsServiceProvider.php
@@ -13,11 +13,11 @@
 class ActionsServiceProvider extends ServiceProvider
 {
     /**
-     * All of the container bindings that should be registered.
+     * All the container bindings that should be registered.
      *
-     * @var array
+     * @var array<class-string<Action>|string,class-string<Action>>
      */
-    public $bindings = [
+    public array $bindings = [
         'actions' => Action::class,
         Action::class => Action::class,
     ];
@@ -49,6 +49,8 @@ public function boot(): void
 
     /**
      * Get the services provided by the provider.
+     *
+     * @return list<class-string<Action>>
      */
     public function provides(): array
     {
@@ -61,6 +63,9 @@ public function provides(): array
     protected function bootActionMacro(): void
     {
         Action::macro('getMacro', function (string $name): callable|object {
+            /**
+             * @phpstan-ignore-next-line
+             */
             return static::$macros[$name];
         });
     }
@@ -72,9 +77,14 @@ protected function bootActionMacro(): void
      */
     protected function bootAutoDiscoverActions(): void
     {
-        $paths = collect(config('laravel-actions.paths'))
+        /**
+         * @var list<string> $configPaths
+         */
+        $configPaths = config('laravel-actions.paths');
+
+        $paths = collect($configPaths)
             ->unique()
-            ->filter(function ($path) {
+            ->filter(function (string $path): bool {
                 return is_dir($path);
             });
 
@@ -82,7 +92,12 @@ protected function bootAutoDiscoverActions(): void
             return;
         }
 
-        foreach ((new Finder())->in($paths->toArray())->files() as $action) {
+        /**
+         * @var list<string> $dirs
+         */
+        $dirs = $paths->toArray();
+
+        foreach ((new Finder())->in($dirs)->files() as $action) {
             if (preg_match('#(namespace)(\\s+)([A-Za-z0-9\\\\]+?)(\\s*);#sm', $action->getContents(), $namespaceMatches)) {
                 $action = (string) Str::of($namespaceMatches[3])
                     ->finish('\\')
diff --git a/src/Commands/stubs/Action.stub b/src/Commands/stubs/Action.stub
index 0260d95..6c37493 100644
--- a/src/Commands/stubs/Action.stub
+++ b/src/Commands/stubs/Action.stub
@@ -11,22 +11,16 @@ class DummyClass implements Actionable
 
     /**
      * Event to dispatch before action starts.
-     *
-     * @var string
      */
-    public $before = '';
+    public string $before = '';
 
     /**
      * Event to dispatch after action completes.
-     *
-     * @var string
      */
-    public $after = '';
+    public string $after = '';
 
     /**
      * Create a new action instance.
-     *
-     * @return void
      */
     public function __construct()
     {
@@ -35,8 +29,6 @@ class DummyClass implements Actionable
 
     /**
      * Execute the action.
-     *
-     * @return mixed
      */
     public function __invoke()
     {
diff --git a/src/Traits/CanAct.php b/src/Traits/CanAct.php
index c06b45f..6e05169 100644
--- a/src/Traits/CanAct.php
+++ b/src/Traits/CanAct.php
@@ -11,7 +11,6 @@ trait CanAct
     /**
      * Handles static method calls by passing them to the Action class.
      *
-     *
      * @return mixed|void
      */
     public static function __callStatic(string $name, array $arguments)
diff --git a/src/helpers.php b/src/helpers.php
index 1cb3f36..592d147 100644
--- a/src/helpers.php
+++ b/src/helpers.php
@@ -8,7 +8,7 @@
      *
      * @param  mixed  ...$arguments
      *
-     * @return mixed
+     * @return mixed|void
      *
      * @throws Throwable
      */
@@ -22,9 +22,12 @@ function act(string $action, ...$arguments)
     /**
      * Initiate the given action if the given condition is true.
      *
+     * @template TValue
+     *
+     * @param  TValue  $condition
      * @param  mixed  ...$arguments
      *
-     * @return mixed
+     * @return mixed|void
      *
      * @throws Throwable
      */
@@ -38,9 +41,12 @@ function act_when($condition, string $action, ...$arguments)
     /**
      * Initiate the given action if the given condition is false.
      *
+     * @template TValue
+     *
+     * @param  TValue  $condition
      * @param  mixed  ...$arguments
      *
-     * @return mixed
+     * @return mixed|void
      *
      * @throws Throwable
      */
diff --git a/tests/Fixtures/Actions/ActionWithAllEvents.php b/tests/Fixtures/Actions/ActionWithAllEvents.php
index 478321c..5574374 100644
--- a/tests/Fixtures/Actions/ActionWithAllEvents.php
+++ b/tests/Fixtures/Actions/ActionWithAllEvents.php
@@ -6,7 +6,6 @@
 use Kirschbaum\Actions\Traits\CanAct;
 use Tests\Fixtures\Events\AfterEvent;
 use Tests\Fixtures\Events\BeforeEvent;
-use Throwable;
 
 class ActionWithAllEvents implements Actionable
 {
@@ -14,26 +13,18 @@ class ActionWithAllEvents implements Actionable
 
     /**
      * Event to dispatch before action starts.
-     *
-     * @var string
      */
-    public $before = BeforeEvent::class;
+    public string $before = BeforeEvent::class;
 
     /**
      * Event to dispatch after action completes.
-     *
-     * @var string
      */
-    public $after = AfterEvent::class;
+    public string $after = AfterEvent::class;
 
     /**
      * Execute the action.
-     *
-     * @return mixed
-     *
-     * @throws Throwable
      */
-    public function __invoke()
+    public function __invoke(): bool
     {
         return true;
     }
diff --git a/tests/Fixtures/Actions/ActionWithCustomException.php b/tests/Fixtures/Actions/ActionWithCustomException.php
index 9ea4209..86dc831 100644
--- a/tests/Fixtures/Actions/ActionWithCustomException.php
+++ b/tests/Fixtures/Actions/ActionWithCustomException.php
@@ -14,16 +14,12 @@ class ActionWithCustomException implements Actionable
 
     /**
      * Event to dispatch if action throws an exception.
-     *
-     * @var string
      */
-    public $exception = CustomFailedException::class;
+    public string $exception = CustomFailedException::class;
 
     /**
      * Execute the action.
      *
-     * @return mixed
-     *
      * @throws Throwable
      */
     public function __invoke()
diff --git a/tests/Fixtures/Actions/ActionWithException.php b/tests/Fixtures/Actions/ActionWithException.php
index 029e5d0..1fb074e 100644
--- a/tests/Fixtures/Actions/ActionWithException.php
+++ b/tests/Fixtures/Actions/ActionWithException.php
@@ -14,8 +14,6 @@ class ActionWithException implements Actionable
     /**
      * Execute the action.
      *
-     * @return mixed
-     *
      * @throws Throwable
      */
     public function __invoke()
diff --git a/tests/Fixtures/Actions/ActionWithNoEvents.php b/tests/Fixtures/Actions/ActionWithNoEvents.php
index e00451c..c2dc4e2 100644
--- a/tests/Fixtures/Actions/ActionWithNoEvents.php
+++ b/tests/Fixtures/Actions/ActionWithNoEvents.php
@@ -4,7 +4,6 @@
 
 use Kirschbaum\Actions\Contracts\Actionable;
 use Kirschbaum\Actions\Traits\CanAct;
-use Throwable;
 
 class ActionWithNoEvents implements Actionable
 {
@@ -12,12 +11,8 @@ class ActionWithNoEvents implements Actionable
 
     /**
      * Execute the action.
-     *
-     * @return mixed
-     *
-     * @throws Throwable
      */
-    public function __invoke()
+    public function __invoke(): bool
     {
         return true;
     }
diff --git a/tests/Fixtures/Actions/ActionWithOnlyAfterEvent.php b/tests/Fixtures/Actions/ActionWithOnlyAfterEvent.php
index da8b1cc..5adcf0f 100644
--- a/tests/Fixtures/Actions/ActionWithOnlyAfterEvent.php
+++ b/tests/Fixtures/Actions/ActionWithOnlyAfterEvent.php
@@ -5,7 +5,6 @@
 use Kirschbaum\Actions\Contracts\Actionable;
 use Kirschbaum\Actions\Traits\CanAct;
 use Tests\Fixtures\Events\AfterEvent;
-use Throwable;
 
 class ActionWithOnlyAfterEvent implements Actionable
 {
@@ -13,19 +12,13 @@ class ActionWithOnlyAfterEvent implements Actionable
 
     /**
      * Event to dispatch after action completes.
-     *
-     * @var string
      */
-    public $after = AfterEvent::class;
+    public string $after = AfterEvent::class;
 
     /**
      * Execute the action.
-     *
-     * @return mixed
-     *
-     * @throws Throwable
      */
-    public function __invoke()
+    public function __invoke(): bool
     {
         return true;
     }
diff --git a/tests/Fixtures/Actions/ActionWithOnlyBeforeEvent.php b/tests/Fixtures/Actions/ActionWithOnlyBeforeEvent.php
index 4c92a7f..27f006d 100644
--- a/tests/Fixtures/Actions/ActionWithOnlyBeforeEvent.php
+++ b/tests/Fixtures/Actions/ActionWithOnlyBeforeEvent.php
@@ -5,7 +5,6 @@
 use Kirschbaum\Actions\Contracts\Actionable;
 use Kirschbaum\Actions\Traits\CanAct;
 use Tests\Fixtures\Events\BeforeEvent;
-use Throwable;
 
 class ActionWithOnlyBeforeEvent implements Actionable
 {
@@ -13,19 +12,13 @@ class ActionWithOnlyBeforeEvent implements Actionable
 
     /**
      * Event to dispatch before action starts.
-     *
-     * @var string
      */
-    public $before = BeforeEvent::class;
+    public string $before = BeforeEvent::class;
 
     /**
      * Execute the action.
-     *
-     * @return mixed
-     *
-     * @throws Throwable
      */
-    public function __invoke()
+    public function __invoke(): bool
     {
         return true;
     }
diff --git a/tests/Fixtures/Actions/ActionWithoutInterface.php b/tests/Fixtures/Actions/ActionWithoutInterface.php
index 3b3dbc9..afb9147 100644
--- a/tests/Fixtures/Actions/ActionWithoutInterface.php
+++ b/tests/Fixtures/Actions/ActionWithoutInterface.php
@@ -3,7 +3,6 @@
 namespace Tests\Fixtures\Actions;
 
 use Kirschbaum\Actions\Traits\CanAct;
-use Throwable;
 
 class ActionWithoutInterface
 {
@@ -11,12 +10,8 @@ class ActionWithoutInterface
 
     /**
      * Execute the action.
-     *
-     * @return mixed
-     *
-     * @throws Throwable
      */
-    public function __invoke()
+    public function __invoke(): void
     {
         // We will never get here.
     }
diff --git a/tests/Fixtures/Events/AfterEvent.php b/tests/Fixtures/Events/AfterEvent.php
index 7b0d311..96b7c9f 100644
--- a/tests/Fixtures/Events/AfterEvent.php
+++ b/tests/Fixtures/Events/AfterEvent.php
@@ -3,7 +3,6 @@
 namespace Tests\Fixtures\Events;
 
 use Illuminate\Broadcasting\InteractsWithSockets;
-use Illuminate\Broadcasting\PrivateChannel;
 use Illuminate\Foundation\Events\Dispatchable;
 use Illuminate\Queue\SerializesModels;
 
@@ -12,21 +11,4 @@ class AfterEvent
     use Dispatchable;
     use InteractsWithSockets;
     use SerializesModels;
-
-    /**
-     * Create a new event instance.
-     *
-     * @return void
-     */
-    public function __construct() {}
-
-    /**
-     * Get the channels the event should broadcast on.
-     *
-     * @return \Illuminate\Broadcasting\Channel|array
-     */
-    public function broadcastOn()
-    {
-        return new PrivateChannel('channel-name');
-    }
 }
diff --git a/tests/Fixtures/Events/BeforeEvent.php b/tests/Fixtures/Events/BeforeEvent.php
index bcdb3ed..9606f48 100644
--- a/tests/Fixtures/Events/BeforeEvent.php
+++ b/tests/Fixtures/Events/BeforeEvent.php
@@ -3,7 +3,6 @@
 namespace Tests\Fixtures\Events;
 
 use Illuminate\Broadcasting\InteractsWithSockets;
-use Illuminate\Broadcasting\PrivateChannel;
 use Illuminate\Foundation\Events\Dispatchable;
 use Illuminate\Queue\SerializesModels;
 
@@ -12,21 +11,4 @@ class BeforeEvent
     use Dispatchable;
     use InteractsWithSockets;
     use SerializesModels;
-
-    /**
-     * Create a new event instance.
-     *
-     * @return void
-     */
-    public function __construct() {}
-
-    /**
-     * Get the channels the event should broadcast on.
-     *
-     * @return \Illuminate\Broadcasting\Channel|array
-     */
-    public function broadcastOn()
-    {
-        return new PrivateChannel('channel-name');
-    }
 }
diff --git a/tests/Fixtures/Events/FailedEvent.php b/tests/Fixtures/Events/FailedEvent.php
index 326dabe..b1523a8 100644
--- a/tests/Fixtures/Events/FailedEvent.php
+++ b/tests/Fixtures/Events/FailedEvent.php
@@ -3,7 +3,6 @@
 namespace Tests\Fixtures\Events;
 
 use Illuminate\Broadcasting\InteractsWithSockets;
-use Illuminate\Broadcasting\PrivateChannel;
 use Illuminate\Foundation\Events\Dispatchable;
 use Illuminate\Queue\SerializesModels;
 
@@ -12,21 +11,4 @@ class FailedEvent
     use Dispatchable;
     use InteractsWithSockets;
     use SerializesModels;
-
-    /**
-     * Create a new event instance.
-     *
-     * @return void
-     */
-    public function __construct() {}
-
-    /**
-     * Get the channels the event should broadcast on.
-     *
-     * @return \Illuminate\Broadcasting\Channel|array
-     */
-    public function broadcastOn()
-    {
-        return new PrivateChannel('channel-name');
-    }
 }