diff --git a/composer.json b/composer.json
index 9294e4e..a857a5f 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
         "php": "^8.1.0",
         "guzzlehttp/guzzle": "^7.5.1",
         "laravel/framework": "^10.9.0",
-        "gehrisandro/tailwind-merge-php": "^v0.0.1"
+        "gehrisandro/tailwind-merge-php": "dev-add-caching"
     },
     "require-dev": {
         "laravel/pint": "^1.10.2",
diff --git a/src/TailwindMergeServiceProvider.php b/src/TailwindMergeServiceProvider.php
index 817bb17..e8b3efe 100644
--- a/src/TailwindMergeServiceProvider.php
+++ b/src/TailwindMergeServiceProvider.php
@@ -16,6 +16,7 @@ public function register(): void
     {
         $this->app->singleton(TailwindMergeContract::class, static fn (): TailwindMerge => TailwindMerge::factory()
             ->withConfiguration(config('tailwind-merge', []))
+            ->withCache(app('cache')->store()) // @phpstan-ignore-line
             ->make());
 
         $this->app->alias(TailwindMergeContract::class, 'tailwind-merge');
diff --git a/tests/Arch.php b/tests/Arch.php
index fd0aba6..0296238 100644
--- a/tests/Arch.php
+++ b/tests/Arch.php
@@ -18,6 +18,7 @@
         'TailwindMerge',
 
         // helpers...
+        'app',
         'config',
         'config_path',
         'resolve',
diff --git a/tests/Feature/CacheTest.php b/tests/Feature/CacheTest.php
new file mode 100644
index 0000000..05d6f08
--- /dev/null
+++ b/tests/Feature/CacheTest.php
@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+use Illuminate\Support\Facades\Event;
+use TailwindMerge\TailwindMerge;
+
+it('uses caching', function () {
+    Event::fake();
+
+    $twMerge = $this->app->get(TailwindMerge::class);
+
+    expect($twMerge->merge('h-4 h-6'))->toBe('h-6');
+
+    Event::assertDispatched(\Illuminate\Cache\Events\CacheMissed::class, 1);
+    Event::assertNotDispatched(\Illuminate\Cache\Events\CacheHit::class);
+
+    expect($twMerge->merge('h-4 h-6'))->toBe('h-6');
+
+    Event::assertDispatched(\Illuminate\Cache\Events\CacheMissed::class, 1);
+    Event::assertDispatched(\Illuminate\Cache\Events\CacheHit::class, 2);
+});
diff --git a/tests/Pest.php b/tests/Pest.php
index 48c2b95..797de52 100644
--- a/tests/Pest.php
+++ b/tests/Pest.php
@@ -7,4 +7,4 @@
     \Illuminate\Foundation\Testing\Concerns\InteractsWithViews::class,
     \Tests\TestCase::class,
 )
-    ->in('Feature');
+    ->in(__DIR__);