diff --git a/app/Rules/UnsignedBigInteger.php b/app/Rules/UnsignedBigInteger.php
new file mode 100644
index 0000000..c99dc2b
--- /dev/null
+++ b/app/Rules/UnsignedBigInteger.php
@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Rules;
+
+use Closure;
+use Illuminate\Contracts\Validation\ValidationRule;
+
+class UnsignedBigInteger implements ValidationRule
+{
+    public function validate(string $attribute, mixed $value, Closure $fail): void
+    {
+        if (! ctype_digit((string) $value)) {
+            $fail("{$attribute} harus berupa bilangan bulat positif.");
+
+            return;
+        }
+
+        if (bccomp($value, '0') < 0 || bccomp($value, '18446744073709551615') > 0) {
+            $fail("{$attribute} harus berada di antara 0 dan 18446744073709551615.");
+        }
+    }
+}
diff --git a/app/Rules/UnsignedInteger.php b/app/Rules/UnsignedInteger.php
new file mode 100644
index 0000000..672ad80
--- /dev/null
+++ b/app/Rules/UnsignedInteger.php
@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Rules;
+
+use Closure;
+use Illuminate\Contracts\Validation\ValidationRule;
+
+class UnsignedInteger implements ValidationRule
+{
+    public function validate(string $attribute, mixed $value, Closure $fail): void
+    {
+        if (! ctype_digit((string) $value)) {
+            $fail("{$attribute} harus berupa bilangan bulat positif.");
+
+            return;
+        }
+
+        if ((int) $value < 0 || (int) $value > 4294967295) {
+            $fail("{$attribute} harus berada di antara 0 dan 4294967295.");
+        }
+    }
+}