diff --git a/library/Rules/AlwaysInvalid.php b/library/Rules/AlwaysInvalid.php
index 791cbe7d3..14ddba69f 100644
--- a/library/Rules/AlwaysInvalid.php
+++ b/library/Rules/AlwaysInvalid.php
@@ -28,7 +28,7 @@ final class AlwaysInvalid extends Simple
 {
     public const TEMPLATE_SIMPLE = '__simple__';
 
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return false;
     }
diff --git a/library/Rules/AlwaysValid.php b/library/Rules/AlwaysValid.php
index dbca8bd44..da38ea43b 100644
--- a/library/Rules/AlwaysValid.php
+++ b/library/Rules/AlwaysValid.php
@@ -20,7 +20,7 @@
 )]
 final class AlwaysValid extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return true;
     }
diff --git a/library/Rules/ArrayType.php b/library/Rules/ArrayType.php
index eff84f9d8..6906c94ef 100644
--- a/library/Rules/ArrayType.php
+++ b/library/Rules/ArrayType.php
@@ -22,7 +22,7 @@
 )]
 final class ArrayType extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_array($input);
     }
diff --git a/library/Rules/ArrayVal.php b/library/Rules/ArrayVal.php
index 7d2e32686..3368faa10 100644
--- a/library/Rules/ArrayVal.php
+++ b/library/Rules/ArrayVal.php
@@ -24,7 +24,7 @@
 )]
 final class ArrayVal extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_array($input) || $input instanceof ArrayAccess || $input instanceof SimpleXMLElement;
     }
diff --git a/library/Rules/Base64.php b/library/Rules/Base64.php
index ced23218c..6996f1229 100644
--- a/library/Rules/Base64.php
+++ b/library/Rules/Base64.php
@@ -24,7 +24,7 @@
 )]
 final class Base64 extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_string($input)) {
             return false;
diff --git a/library/Rules/BoolType.php b/library/Rules/BoolType.php
index 45049b31e..b27cae6ee 100644
--- a/library/Rules/BoolType.php
+++ b/library/Rules/BoolType.php
@@ -22,7 +22,7 @@
 )]
 final class BoolType extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_bool($input);
     }
diff --git a/library/Rules/BoolVal.php b/library/Rules/BoolVal.php
index ee765fec6..bd4c53924 100644
--- a/library/Rules/BoolVal.php
+++ b/library/Rules/BoolVal.php
@@ -26,7 +26,7 @@
 )]
 final class BoolVal extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_bool(filter_var($input, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE));
     }
diff --git a/library/Rules/Bsn.php b/library/Rules/Bsn.php
index f29c71134..cc5d1d9db 100644
--- a/library/Rules/Bsn.php
+++ b/library/Rules/Bsn.php
@@ -29,7 +29,7 @@
 )]
 final class Bsn extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_scalar($input)) {
             return false;
diff --git a/library/Rules/CallableType.php b/library/Rules/CallableType.php
index 253c0993d..66985570a 100644
--- a/library/Rules/CallableType.php
+++ b/library/Rules/CallableType.php
@@ -22,7 +22,7 @@
 )]
 final class CallableType extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_callable($input);
     }
diff --git a/library/Rules/Callback.php b/library/Rules/Callback.php
index 87e12c5c3..2847f81d0 100644
--- a/library/Rules/Callback.php
+++ b/library/Rules/Callback.php
@@ -40,7 +40,7 @@ public function __construct(callable $callback, mixed ...$arguments)
         $this->arguments = $arguments;
     }
 
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return (bool) call_user_func_array($this->callback, $this->getArguments($input));
     }
diff --git a/library/Rules/Cnh.php b/library/Rules/Cnh.php
index c82dd78d4..5934f7bbe 100644
--- a/library/Rules/Cnh.php
+++ b/library/Rules/Cnh.php
@@ -24,7 +24,7 @@
 )]
 final class Cnh extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_scalar($input)) {
             return false;
diff --git a/library/Rules/Cnpj.php b/library/Rules/Cnpj.php
index 08937e8c3..be4b2e338 100644
--- a/library/Rules/Cnpj.php
+++ b/library/Rules/Cnpj.php
@@ -27,7 +27,7 @@
 )]
 final class Cnpj extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_scalar($input)) {
             return false;
diff --git a/library/Rules/Core/Simple.php b/library/Rules/Core/Simple.php
index 7e42c14eb..bb4fcac23 100644
--- a/library/Rules/Core/Simple.php
+++ b/library/Rules/Core/Simple.php
@@ -13,7 +13,7 @@
 
 abstract class Simple extends Standard
 {
-    abstract protected function isValid(mixed $input): bool;
+    abstract public function isValid(mixed $input): bool;
 
     public function evaluate(mixed $input): Result
     {
diff --git a/library/Rules/Countable.php b/library/Rules/Countable.php
index caa08e1ab..68802d6d5 100644
--- a/library/Rules/Countable.php
+++ b/library/Rules/Countable.php
@@ -23,7 +23,7 @@
 )]
 final class Countable extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_array($input) || $input instanceof CountableInterface;
     }
diff --git a/library/Rules/Cpf.php b/library/Rules/Cpf.php
index 41694ca05..b02329c77 100644
--- a/library/Rules/Cpf.php
+++ b/library/Rules/Cpf.php
@@ -25,7 +25,7 @@
 )]
 final class Cpf extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         // Code ported from jsfromhell.com
         $c = preg_replace('/\D/', '', $input);
diff --git a/library/Rules/Directory.php b/library/Rules/Directory.php
index 036f305b1..9ea7fa53b 100644
--- a/library/Rules/Directory.php
+++ b/library/Rules/Directory.php
@@ -25,7 +25,7 @@
 )]
 final class Directory extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if ($input instanceof SplFileInfo) {
             return $input->isDir();
diff --git a/library/Rules/Email.php b/library/Rules/Email.php
index 34e44a787..e8971bd00 100644
--- a/library/Rules/Email.php
+++ b/library/Rules/Email.php
@@ -39,7 +39,7 @@ public function __construct(?EmailValidator $validator = null)
         $this->validator = $validator;
     }
 
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_string($input)) {
             return false;
diff --git a/library/Rules/Even.php b/library/Rules/Even.php
index 3e67c319b..4600e6aec 100644
--- a/library/Rules/Even.php
+++ b/library/Rules/Even.php
@@ -24,7 +24,7 @@
 )]
 final class Even extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (filter_var($input, FILTER_VALIDATE_INT) === false) {
             return false;
diff --git a/library/Rules/Executable.php b/library/Rules/Executable.php
index 93bea4644..100045e85 100644
--- a/library/Rules/Executable.php
+++ b/library/Rules/Executable.php
@@ -24,7 +24,7 @@
 )]
 final class Executable extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if ($input instanceof SplFileInfo) {
             return $input->isExecutable();
diff --git a/library/Rules/Exists.php b/library/Rules/Exists.php
index 4bef376a8..5fefc3e3b 100644
--- a/library/Rules/Exists.php
+++ b/library/Rules/Exists.php
@@ -24,7 +24,7 @@
 )]
 final class Exists extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if ($input instanceof SplFileInfo) {
             $input = $input->getPathname();
diff --git a/library/Rules/FalseVal.php b/library/Rules/FalseVal.php
index 1cc65cac7..495d37889 100644
--- a/library/Rules/FalseVal.php
+++ b/library/Rules/FalseVal.php
@@ -25,7 +25,7 @@
 )]
 final class FalseVal extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return filter_var($input, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE) === false;
     }
diff --git a/library/Rules/Fibonacci.php b/library/Rules/Fibonacci.php
index 705a72f7a..da22acbe8 100644
--- a/library/Rules/Fibonacci.php
+++ b/library/Rules/Fibonacci.php
@@ -22,7 +22,7 @@
 )]
 final class Fibonacci extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_numeric($input)) {
             return false;
diff --git a/library/Rules/File.php b/library/Rules/File.php
index b6f892467..27743d02f 100644
--- a/library/Rules/File.php
+++ b/library/Rules/File.php
@@ -24,7 +24,7 @@
 )]
 final class File extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if ($input instanceof SplFileInfo) {
             return $input->isFile();
diff --git a/library/Rules/Finite.php b/library/Rules/Finite.php
index 20c1fa04f..9e3a69414 100644
--- a/library/Rules/Finite.php
+++ b/library/Rules/Finite.php
@@ -23,7 +23,7 @@
 )]
 final class Finite extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_numeric($input) && is_finite((float) $input);
     }
diff --git a/library/Rules/FloatType.php b/library/Rules/FloatType.php
index 2ad8ffd17..ed4b89309 100644
--- a/library/Rules/FloatType.php
+++ b/library/Rules/FloatType.php
@@ -22,7 +22,7 @@
 )]
 final class FloatType extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_float($input);
     }
diff --git a/library/Rules/FloatVal.php b/library/Rules/FloatVal.php
index dd9aa907d..9369dab63 100644
--- a/library/Rules/FloatVal.php
+++ b/library/Rules/FloatVal.php
@@ -25,7 +25,7 @@
 )]
 final class FloatVal extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_float(filter_var($input, FILTER_VALIDATE_FLOAT));
     }
diff --git a/library/Rules/Hetu.php b/library/Rules/Hetu.php
index 08211a8af..c7452a5d8 100644
--- a/library/Rules/Hetu.php
+++ b/library/Rules/Hetu.php
@@ -30,7 +30,7 @@ final class Hetu extends Simple
 {
     use CanValidateDateTime;
 
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_string($input)) {
             return false;
diff --git a/library/Rules/Iban.php b/library/Rules/Iban.php
index 9bb9a749c..b515b0ffd 100644
--- a/library/Rules/Iban.php
+++ b/library/Rules/Iban.php
@@ -105,7 +105,7 @@ final class Iban extends Simple
         'VG' => 24,
     ];
 
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_string($input)) {
             return false;
diff --git a/library/Rules/Image.php b/library/Rules/Image.php
index 27a12320e..d4daf7b3a 100644
--- a/library/Rules/Image.php
+++ b/library/Rules/Image.php
@@ -35,7 +35,7 @@ public function __construct(?finfo $fileInfo = null)
         $this->fileInfo = $fileInfo ?: new finfo(FILEINFO_MIME_TYPE);
     }
 
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if ($input instanceof SplFileInfo) {
             return $this->isValid($input->getPathname());
diff --git a/library/Rules/Imei.php b/library/Rules/Imei.php
index 16d83302d..5e727ce32 100644
--- a/library/Rules/Imei.php
+++ b/library/Rules/Imei.php
@@ -26,7 +26,7 @@ final class Imei extends Simple
 {
     private const IMEI_SIZE = 15;
 
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_scalar($input)) {
             return false;
diff --git a/library/Rules/Infinite.php b/library/Rules/Infinite.php
index f5a7b56f0..c0beff501 100644
--- a/library/Rules/Infinite.php
+++ b/library/Rules/Infinite.php
@@ -23,7 +23,7 @@
 )]
 final class Infinite extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_numeric($input) && is_infinite((float) $input);
     }
diff --git a/library/Rules/IntType.php b/library/Rules/IntType.php
index 154d610c1..7ba0e22ca 100644
--- a/library/Rules/IntType.php
+++ b/library/Rules/IntType.php
@@ -22,7 +22,7 @@
 )]
 final class IntType extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_int($input);
     }
diff --git a/library/Rules/IntVal.php b/library/Rules/IntVal.php
index d2f5d83fd..dc31fa86c 100644
--- a/library/Rules/IntVal.php
+++ b/library/Rules/IntVal.php
@@ -24,7 +24,7 @@
 )]
 final class IntVal extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (is_int($input)) {
             return true;
diff --git a/library/Rules/Isbn.php b/library/Rules/Isbn.php
index 494087df7..6215b8935 100644
--- a/library/Rules/Isbn.php
+++ b/library/Rules/Isbn.php
@@ -34,7 +34,7 @@ final class Isbn extends Simple
         '(?:97[89][- ]?)?[0-9]{1,5}[- ]?[0-9]+[- ]?[0-9]+[- ]?[0-9X]$',
     ];
 
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_scalar($input)) {
             return false;
diff --git a/library/Rules/IterableType.php b/library/Rules/IterableType.php
index 58b4285e9..9cad69e53 100644
--- a/library/Rules/IterableType.php
+++ b/library/Rules/IterableType.php
@@ -22,7 +22,7 @@
 )]
 final class IterableType extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_iterable($input);
     }
diff --git a/library/Rules/IterableVal.php b/library/Rules/IterableVal.php
index f0ab3feae..eddf22869 100644
--- a/library/Rules/IterableVal.php
+++ b/library/Rules/IterableVal.php
@@ -23,7 +23,7 @@ final class IterableVal extends Simple
 {
     use CanValidateIterable;
 
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return $this->isIterable($input);
     }
diff --git a/library/Rules/Json.php b/library/Rules/Json.php
index d68424486..afc100035 100644
--- a/library/Rules/Json.php
+++ b/library/Rules/Json.php
@@ -28,7 +28,7 @@
 )]
 final class Json extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_string($input) || $input === '') {
             return false;
diff --git a/library/Rules/LeapDate.php b/library/Rules/LeapDate.php
index ffd435b9e..826f6195c 100644
--- a/library/Rules/LeapDate.php
+++ b/library/Rules/LeapDate.php
@@ -29,7 +29,7 @@ public function __construct(
     ) {
     }
 
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if ($input instanceof DateTimeInterface) {
             return $input->format('m-d') === '02-29';
diff --git a/library/Rules/LeapYear.php b/library/Rules/LeapYear.php
index 73cc65695..a6a8e75e2 100644
--- a/library/Rules/LeapYear.php
+++ b/library/Rules/LeapYear.php
@@ -27,7 +27,7 @@
 )]
 final class LeapYear extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (is_numeric($input)) {
             $date = strtotime(sprintf('%d-02-29', (int) $input));
diff --git a/library/Rules/Lowercase.php b/library/Rules/Lowercase.php
index 29de040ee..a4acf2fba 100644
--- a/library/Rules/Lowercase.php
+++ b/library/Rules/Lowercase.php
@@ -23,7 +23,7 @@
 )]
 final class Lowercase extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_string($input)) {
             return false;
diff --git a/library/Rules/Luhn.php b/library/Rules/Luhn.php
index 70ccf3083..abd0e17b8 100644
--- a/library/Rules/Luhn.php
+++ b/library/Rules/Luhn.php
@@ -27,7 +27,7 @@
 )]
 final class Luhn extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!(new Digit())->evaluate($input)->isValid) {
             return false;
diff --git a/library/Rules/MacAddress.php b/library/Rules/MacAddress.php
index 9a954c9c1..b46c41811 100644
--- a/library/Rules/MacAddress.php
+++ b/library/Rules/MacAddress.php
@@ -23,7 +23,7 @@
 )]
 final class MacAddress extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_string($input)) {
             return false;
diff --git a/library/Rules/Negative.php b/library/Rules/Negative.php
index fb2183e4b..60a3074ab 100644
--- a/library/Rules/Negative.php
+++ b/library/Rules/Negative.php
@@ -22,7 +22,7 @@
 )]
 final class Negative extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_numeric($input)) {
             return false;
diff --git a/library/Rules/NfeAccessKey.php b/library/Rules/NfeAccessKey.php
index f991dbdd7..125523bd9 100644
--- a/library/Rules/NfeAccessKey.php
+++ b/library/Rules/NfeAccessKey.php
@@ -28,7 +28,7 @@
 )]
 final class NfeAccessKey extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (mb_strlen($input) !== 44) {
             return false;
diff --git a/library/Rules/Nif.php b/library/Rules/Nif.php
index ce58e8c5c..0720b1101 100644
--- a/library/Rules/Nif.php
+++ b/library/Rules/Nif.php
@@ -31,7 +31,7 @@
 )]
 final class Nif extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_string($input)) {
             return false;
diff --git a/library/Rules/Nip.php b/library/Rules/Nip.php
index f75da0bc0..aaf7c85fe 100644
--- a/library/Rules/Nip.php
+++ b/library/Rules/Nip.php
@@ -28,7 +28,7 @@
 )]
 final class Nip extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_scalar($input)) {
             return false;
diff --git a/library/Rules/NoWhitespace.php b/library/Rules/NoWhitespace.php
index fb4d7de26..264a39381 100644
--- a/library/Rules/NoWhitespace.php
+++ b/library/Rules/NoWhitespace.php
@@ -24,7 +24,7 @@
 )]
 final class NoWhitespace extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (is_null($input)) {
             return true;
diff --git a/library/Rules/NotEmoji.php b/library/Rules/NotEmoji.php
index 9e3d6d70f..0834cbb5a 100644
--- a/library/Rules/NotEmoji.php
+++ b/library/Rules/NotEmoji.php
@@ -196,7 +196,7 @@ final class NotEmoji extends Simple
         '\x{3299}',
     ];
 
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_string($input)) {
             return false;
diff --git a/library/Rules/NullType.php b/library/Rules/NullType.php
index ad5322d71..e6d2bf802 100644
--- a/library/Rules/NullType.php
+++ b/library/Rules/NullType.php
@@ -22,7 +22,7 @@
 )]
 final class NullType extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_null($input);
     }
diff --git a/library/Rules/Number.php b/library/Rules/Number.php
index 816697f0c..ebe4151c6 100644
--- a/library/Rules/Number.php
+++ b/library/Rules/Number.php
@@ -23,7 +23,7 @@
 )]
 final class Number extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_numeric($input)) {
             return false;
diff --git a/library/Rules/NumericVal.php b/library/Rules/NumericVal.php
index 223b8dee6..74958a08d 100644
--- a/library/Rules/NumericVal.php
+++ b/library/Rules/NumericVal.php
@@ -22,7 +22,7 @@
 )]
 final class NumericVal extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_numeric($input);
     }
diff --git a/library/Rules/ObjectType.php b/library/Rules/ObjectType.php
index 9dd4ba9e9..b94d8c605 100644
--- a/library/Rules/ObjectType.php
+++ b/library/Rules/ObjectType.php
@@ -22,7 +22,7 @@
 )]
 final class ObjectType extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_object($input);
     }
diff --git a/library/Rules/Odd.php b/library/Rules/Odd.php
index 2842a57d3..3dda2c03e 100644
--- a/library/Rules/Odd.php
+++ b/library/Rules/Odd.php
@@ -25,7 +25,7 @@
 )]
 final class Odd extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_numeric($input)) {
             return false;
diff --git a/library/Rules/PerfectSquare.php b/library/Rules/PerfectSquare.php
index 53b806661..369b37ee7 100644
--- a/library/Rules/PerfectSquare.php
+++ b/library/Rules/PerfectSquare.php
@@ -24,7 +24,7 @@
 )]
 final class PerfectSquare extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_numeric($input) && floor(sqrt((float) $input)) == sqrt((float) $input);
     }
diff --git a/library/Rules/Pesel.php b/library/Rules/Pesel.php
index 6095ff8ba..e633f89f8 100644
--- a/library/Rules/Pesel.php
+++ b/library/Rules/Pesel.php
@@ -23,7 +23,7 @@
 )]
 final class Pesel extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_scalar($input)) {
             return false;
diff --git a/library/Rules/PhpLabel.php b/library/Rules/PhpLabel.php
index 21298dd13..6d7f6e8b7 100644
--- a/library/Rules/PhpLabel.php
+++ b/library/Rules/PhpLabel.php
@@ -23,7 +23,7 @@
 )]
 final class PhpLabel extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_string($input) && preg_match('/^[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*$/', $input);
     }
diff --git a/library/Rules/Pis.php b/library/Rules/Pis.php
index b9ccd78fd..8f32b68e6 100644
--- a/library/Rules/Pis.php
+++ b/library/Rules/Pis.php
@@ -25,7 +25,7 @@
 )]
 final class Pis extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_scalar($input)) {
             return false;
diff --git a/library/Rules/PolishIdCard.php b/library/Rules/PolishIdCard.php
index 791f020a0..511d7dbf2 100644
--- a/library/Rules/PolishIdCard.php
+++ b/library/Rules/PolishIdCard.php
@@ -32,7 +32,7 @@ final class PolishIdCard extends Simple
     private const ASCII_CODE_9 = 57;
     private const ASCII_CODE_A = 65;
 
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_scalar($input)) {
             return false;
diff --git a/library/Rules/PortugueseNif.php b/library/Rules/PortugueseNif.php
index 5df64abb2..b3d8dd1ae 100644
--- a/library/Rules/PortugueseNif.php
+++ b/library/Rules/PortugueseNif.php
@@ -33,7 +33,7 @@
 )]
 final class PortugueseNif extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         // Validate format and length
         if (!is_string($input)) {
diff --git a/library/Rules/Positive.php b/library/Rules/Positive.php
index 626b47039..d16d7dd86 100644
--- a/library/Rules/Positive.php
+++ b/library/Rules/Positive.php
@@ -22,7 +22,7 @@
 )]
 final class Positive extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_numeric($input)) {
             return false;
diff --git a/library/Rules/PrimeNumber.php b/library/Rules/PrimeNumber.php
index 7edb0269e..4b83feefa 100644
--- a/library/Rules/PrimeNumber.php
+++ b/library/Rules/PrimeNumber.php
@@ -24,7 +24,7 @@
 )]
 final class PrimeNumber extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_numeric($input) || $input <= 1) {
             return false;
diff --git a/library/Rules/PublicDomainSuffix.php b/library/Rules/PublicDomainSuffix.php
index c46a503bd..4a24873c7 100644
--- a/library/Rules/PublicDomainSuffix.php
+++ b/library/Rules/PublicDomainSuffix.php
@@ -30,7 +30,7 @@ final class PublicDomainSuffix extends Simple
 {
     use CanValidateUndefined;
 
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_scalar($input)) {
             return false;
diff --git a/library/Rules/Readable.php b/library/Rules/Readable.php
index 5cdb25b20..a6b60f671 100644
--- a/library/Rules/Readable.php
+++ b/library/Rules/Readable.php
@@ -25,7 +25,7 @@
 )]
 final class Readable extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if ($input instanceof SplFileInfo) {
             return $input->isReadable();
diff --git a/library/Rules/ResourceType.php b/library/Rules/ResourceType.php
index 2b545e187..acc890fe9 100644
--- a/library/Rules/ResourceType.php
+++ b/library/Rules/ResourceType.php
@@ -22,7 +22,7 @@
 )]
 final class ResourceType extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_resource($input);
     }
diff --git a/library/Rules/ScalarVal.php b/library/Rules/ScalarVal.php
index 50524404b..e31704310 100644
--- a/library/Rules/ScalarVal.php
+++ b/library/Rules/ScalarVal.php
@@ -22,7 +22,7 @@
 )]
 final class ScalarVal extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_scalar($input);
     }
diff --git a/library/Rules/Slug.php b/library/Rules/Slug.php
index c47f618d5..aecad1b8b 100644
--- a/library/Rules/Slug.php
+++ b/library/Rules/Slug.php
@@ -24,7 +24,7 @@
 )]
 final class Slug extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_string($input) || mb_strstr($input, '--')) {
             return false;
diff --git a/library/Rules/StringType.php b/library/Rules/StringType.php
index de112cdad..de0e500eb 100644
--- a/library/Rules/StringType.php
+++ b/library/Rules/StringType.php
@@ -22,7 +22,7 @@
 )]
 final class StringType extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_string($input);
     }
diff --git a/library/Rules/StringVal.php b/library/Rules/StringVal.php
index 6058987e7..62ef02c0a 100644
--- a/library/Rules/StringVal.php
+++ b/library/Rules/StringVal.php
@@ -24,7 +24,7 @@
 )]
 final class StringVal extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return is_scalar($input) || (is_object($input) && method_exists($input, '__toString'));
     }
diff --git a/library/Rules/SymbolicLink.php b/library/Rules/SymbolicLink.php
index 59f2a7500..58b654435 100644
--- a/library/Rules/SymbolicLink.php
+++ b/library/Rules/SymbolicLink.php
@@ -24,7 +24,7 @@
 )]
 final class SymbolicLink extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if ($input instanceof SplFileInfo) {
             return $input->isLink();
diff --git a/library/Rules/Tld.php b/library/Rules/Tld.php
index 0d7512253..43aad3c5c 100644
--- a/library/Rules/Tld.php
+++ b/library/Rules/Tld.php
@@ -237,7 +237,7 @@ final class Tld extends Simple
         'ZA', 'ZAPPOS', 'ZARA', 'ZERO', 'ZIP', 'ZM', 'ZONE', 'ZUERICH', 'ZW',
     ];
 
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_scalar($input)) {
             return false;
diff --git a/library/Rules/TrueVal.php b/library/Rules/TrueVal.php
index b70681070..1d9dee560 100644
--- a/library/Rules/TrueVal.php
+++ b/library/Rules/TrueVal.php
@@ -25,7 +25,7 @@
 )]
 final class TrueVal extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return filter_var($input, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE) === true;
     }
diff --git a/library/Rules/Unique.php b/library/Rules/Unique.php
index e3c047722..b060f54f4 100644
--- a/library/Rules/Unique.php
+++ b/library/Rules/Unique.php
@@ -25,7 +25,7 @@
 )]
 final class Unique extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_array($input)) {
             return false;
diff --git a/library/Rules/Uploaded.php b/library/Rules/Uploaded.php
index ee49c98b0..4de5ac827 100644
--- a/library/Rules/Uploaded.php
+++ b/library/Rules/Uploaded.php
@@ -25,7 +25,7 @@
 )]
 final class Uploaded extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if ($input instanceof SplFileInfo) {
             return $this->isValid($input->getPathname());
diff --git a/library/Rules/Uppercase.php b/library/Rules/Uppercase.php
index 1b9c25e97..e51c6f43d 100644
--- a/library/Rules/Uppercase.php
+++ b/library/Rules/Uppercase.php
@@ -23,7 +23,7 @@
 )]
 final class Uppercase extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_string($input)) {
             return false;
diff --git a/library/Rules/Version.php b/library/Rules/Version.php
index d1750c59f..80b791ae4 100644
--- a/library/Rules/Version.php
+++ b/library/Rules/Version.php
@@ -26,7 +26,7 @@
 )]
 final class Version extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_string($input)) {
             return false;
diff --git a/library/Rules/Writable.php b/library/Rules/Writable.php
index d9a1f78e3..0f76953f9 100644
--- a/library/Rules/Writable.php
+++ b/library/Rules/Writable.php
@@ -25,7 +25,7 @@
 )]
 final class Writable extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if ($input instanceof SplFileInfo) {
             return $input->isWritable();
diff --git a/library/Rules/Yes.php b/library/Rules/Yes.php
index 75b45a135..70c967e4d 100644
--- a/library/Rules/Yes.php
+++ b/library/Rules/Yes.php
@@ -31,7 +31,7 @@ public function __construct(
     ) {
     }
 
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         if (!is_string($input)) {
             return false;
diff --git a/tests/feature/Issues/Issue1477Test.php b/tests/feature/Issues/Issue1477Test.php
index a55443f46..737e982fd 100644
--- a/tests/feature/Issues/Issue1477Test.php
+++ b/tests/feature/Issues/Issue1477Test.php
@@ -15,7 +15,7 @@ function (): void {
             'Address',
             v::templated(
                 new class extends Simple {
-                    protected function isValid(mixed $input): bool
+                    public function isValid(mixed $input): bool
                     {
                         return false;
                     }
diff --git a/tests/library/Rules/Core/ConcreteSimple.php b/tests/library/Rules/Core/ConcreteSimple.php
index 4c05e538d..fbb91aebd 100644
--- a/tests/library/Rules/Core/ConcreteSimple.php
+++ b/tests/library/Rules/Core/ConcreteSimple.php
@@ -13,7 +13,7 @@
 
 final class ConcreteSimple extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return true;
     }
diff --git a/tests/library/Rules/CustomRule.php b/tests/library/Rules/CustomRule.php
index 189752106..8432097d7 100644
--- a/tests/library/Rules/CustomRule.php
+++ b/tests/library/Rules/CustomRule.php
@@ -13,7 +13,7 @@
 
 final class CustomRule extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return false;
     }
diff --git a/tests/library/Rules/Stub.php b/tests/library/Rules/Stub.php
index ce290f5eb..832868fc0 100644
--- a/tests/library/Rules/Stub.php
+++ b/tests/library/Rules/Stub.php
@@ -55,7 +55,7 @@ public static function fail(int $expectedCount): self
         return new self(...array_fill(0, $expectedCount, false));
     }
 
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         $this->inputs[] = $input;
 
diff --git a/tests/library/Rules/Valid.php b/tests/library/Rules/Valid.php
index d9e041195..ed17074be 100644
--- a/tests/library/Rules/Valid.php
+++ b/tests/library/Rules/Valid.php
@@ -13,7 +13,7 @@
 
 final class Valid extends Simple
 {
-    protected function isValid(mixed $input): bool
+    public function isValid(mixed $input): bool
     {
         return true;
     }