diff --git a/app/Rules/Recaptcha.php b/app/Rules/Recaptcha.php
new file mode 100644
index 00000000..4bd2f095
--- /dev/null
+++ b/app/Rules/Recaptcha.php
@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Rules;
+
+use Closure;
+use Illuminate\Contracts\Validation\ValidationRule;
+use Illuminate\Support\Facades\Http;
+
+class Recaptcha implements ValidationRule
+{
+    /**
+     * Run the validation rule.
+     *
+     * @param \Closure(string): \Illuminate\Translation\PotentiallyTranslatedString $fail
+     */
+    public function validate(string $attribute, mixed $value, Closure $fail): void
+    {
+        $response = Http::asForm()
+            ->post(config('services.google_recaptcha.url'), [
+                'secret' => config('services.google_recaptcha.secret_key'),
+                'response' => $value,
+            ])
+            ->json();
+
+        $success = (bool) data_get($response, 'success');
+        $score = (float) data_get($response, 'score');
+
+        if (! $success || $score < config('services.google_recaptcha.threshold')) {
+            $fail('The :attribute field is invalid.');
+        }
+    }
+}
diff --git a/config/services.php b/config/services.php
index 985e5b95..04456d44 100644
--- a/config/services.php
+++ b/config/services.php
@@ -42,4 +42,10 @@
 
     'google_maps_api_key' => env('GOOGLE_MAPS_API_KEY'),
 
+    'google_recaptcha' => [
+        'url' => 'https://www.google.com/recaptcha/api/siteverify',
+        'site_key' => env('GOOGLE_RECAPTCHA_SITE_KEY'),
+        'secret_key' => env('GOOGLE_RECAPTCHA_SECRET_SITE_KEY'),
+        'threshold' => max(0.0, min(1.0, floatval(env('GOOGLE_RECAPTCHA_SECRET_SITE_KEY', 0.5)))),
+    ],
 ];