diff --git a/docs/guide/input-validation.md b/docs/guide/input-validation.md
index 7cdbdd9927..2c209d1796 100644
--- a/docs/guide/input-validation.md
+++ b/docs/guide/input-validation.md
@@ -895,13 +895,13 @@ the former will take precedence.
 > - if you want to implement your own custom client-side validation but leave the synchronization with server-side
 > validator options;
 > - to extend or customize to fit your specific needs:
-> 
+>
 > ```php
-> protected function getClientOptions($model, $attribute)
+> public function getClientOptions($model, $attribute)
 > {
 >     $options = parent::getClientOptions($model, $attribute);
 >     // Modify $options here
-> 
+>
 >     return $options;
 > }
 > ```
diff --git a/framework/CHANGELOG.md b/framework/CHANGELOG.md
index b9e7d97b45..1fcf8dc7ef 100644
--- a/framework/CHANGELOG.md
+++ b/framework/CHANGELOG.md
@@ -37,7 +37,7 @@ Yii Framework 2 Change Log
 - Enh #9162: Added support of closures in `value` for attributes in `yii\widgets\DetailView` (arogachev)
 - Enh #10896: Select only primary key when counting records in UniqueValidator (developeruz)
 - Enh #11037: `yii.js` and `yii.validation.js` use `Regexp.test()` instead of `String.match()` (arogachev, nkovacs)
-- Enh #11163: Added separate method for client-side validation options in `yii\validators\Validator` (arogachev)
+- Enh #11163: Added separate method for client-side validation options `yii\validators\Validator::getClientOptions()` (arogachev)
 - Enh #11756: Added type mapping for `varbinary` data type in MySQL DBMS (silverfire)
 - Enh #11929: Changed `type` column type from `int` to `smallInt` in RBAC migrations (silverfire)
 - Enh #12015: Changed visibility `yii\db\ActiveQueryTrait::createModels()` from private to protected (ArekX, dynasource)
diff --git a/framework/UPGRADE.md b/framework/UPGRADE.md
index 7c67fd70a2..ecccdb5ed7 100644
--- a/framework/UPGRADE.md
+++ b/framework/UPGRADE.md
@@ -29,14 +29,14 @@ The simple way to upgrade Yii, for example to version 2.0.10 (replace this with
     composer require "yiisoft/yii2:~2.0.10"
 
 This however may fail due to changes in the dependencies of yiisoft/yii2, which may change due to security updates
-in other libraries or by adding support for newer versions. `composer require` will not update any other packages 
+in other libraries or by adding support for newer versions. `composer require` will not update any other packages
 as a safety feature.
 
 The better way to upgrade is to change the `composer.json` file to require the new Yii version and then
 run `composer update` by specifying all packages that are allowed to be updated.
 
     composer update yiisoft/yii2 yiisoft/yii2-composer bower-asset/jquery.inputmask
-    
+
 The above command will only update the specified packages and leave the versions of all other dependencies intact.
 This helps to update packages step by step without causing a lot of package version changes that might break in some way.
 If you feel lucky you can of course update everything to the latest version by running `composer update` without
@@ -57,6 +57,9 @@ Upgrade from Yii 2.0.10
   This method is implemented in the `yii\db\QueryTrait`, so this only affects your code if you implement QueryInterface
   in a class that does not use the trait.
 
+* `yii\validators\FileValidator::getClientOptions()` and `yii\validators\ImageValidator::getClientOptions()` are now public.
+  If you extend from these classes and override these methods, you must make them public as well.
+
 Upgrade from Yii 2.0.9
 ----------------------
 
diff --git a/framework/captcha/CaptchaValidator.php b/framework/captcha/CaptchaValidator.php
index a319740f57..357a81bc70 100644
--- a/framework/captcha/CaptchaValidator.php
+++ b/framework/captcha/CaptchaValidator.php
@@ -95,7 +95,7 @@ class CaptchaValidator extends Validator
     /**
      * @inheritdoc
      */
-    protected function getClientOptions($model, $attribute)
+    public function getClientOptions($model, $attribute)
     {
         $captcha = $this->createCaptchaAction();
         $code = $captcha->getVerifyCode(false);
diff --git a/framework/validators/BooleanValidator.php b/framework/validators/BooleanValidator.php
index 96beafe802..cff9fc9fef 100644
--- a/framework/validators/BooleanValidator.php
+++ b/framework/validators/BooleanValidator.php
@@ -79,7 +79,7 @@ class BooleanValidator extends Validator
     /**
      * @inheritdoc
      */
-    protected function getClientOptions($model, $attribute)
+    public function getClientOptions($model, $attribute)
     {
         $options = [
             'trueValue' => $this->trueValue,
diff --git a/framework/validators/CompareValidator.php b/framework/validators/CompareValidator.php
index b243722ee1..c9284f0f72 100644
--- a/framework/validators/CompareValidator.php
+++ b/framework/validators/CompareValidator.php
@@ -234,7 +234,7 @@ class CompareValidator extends Validator
     /**
      * @inheritdoc
      */
-    protected function getClientOptions($model, $attribute)
+    public function getClientOptions($model, $attribute)
     {
         $options = [
             'operator' => $this->operator,
diff --git a/framework/validators/EmailValidator.php b/framework/validators/EmailValidator.php
index 1989f2cd76..9262b56908 100644
--- a/framework/validators/EmailValidator.php
+++ b/framework/validators/EmailValidator.php
@@ -121,7 +121,7 @@ class EmailValidator extends Validator
     /**
      * @inheritdoc
      */
-    protected function getClientOptions($model, $attribute)
+    public function getClientOptions($model, $attribute)
     {
         $options = [
             'pattern' => new JsExpression($this->pattern),
diff --git a/framework/validators/FileValidator.php b/framework/validators/FileValidator.php
index c0ebf847bd..64774b362a 100644
--- a/framework/validators/FileValidator.php
+++ b/framework/validators/FileValidator.php
@@ -386,7 +386,7 @@ class FileValidator extends Validator
     /**
      * @inheritdoc
      */
-    protected function getClientOptions($model, $attribute)
+    public function getClientOptions($model, $attribute)
     {
         $label = $model->getAttributeLabel($attribute);
 
diff --git a/framework/validators/FilterValidator.php b/framework/validators/FilterValidator.php
index 5f214d712c..cedf241fd1 100644
--- a/framework/validators/FilterValidator.php
+++ b/framework/validators/FilterValidator.php
@@ -97,7 +97,7 @@ class FilterValidator extends Validator
     /**
      * @inheritdoc
      */
-    protected function getClientOptions($model, $attribute)
+    public function getClientOptions($model, $attribute)
     {
         $options = [];
         if ($this->skipOnEmpty) {
diff --git a/framework/validators/ImageValidator.php b/framework/validators/ImageValidator.php
index 769cad9398..6d72812acf 100644
--- a/framework/validators/ImageValidator.php
+++ b/framework/validators/ImageValidator.php
@@ -172,7 +172,7 @@ class ImageValidator extends FileValidator
     /**
      * @inheritdoc
      */
-    protected function getClientOptions($model, $attribute)
+    public function getClientOptions($model, $attribute)
     {
         $options = parent::getClientOptions($model, $attribute);
 
diff --git a/framework/validators/IpValidator.php b/framework/validators/IpValidator.php
index 54018a1ce3..9b72adfad0 100644
--- a/framework/validators/IpValidator.php
+++ b/framework/validators/IpValidator.php
@@ -597,7 +597,7 @@ class IpValidator extends Validator
     /**
      * @inheritdoc
      */
-    protected function getClientOptions($model, $attribute)
+    public function getClientOptions($model, $attribute)
     {
         $messages = [
             'ipv6NotAllowed' => $this->ipv6NotAllowed,
diff --git a/framework/validators/NumberValidator.php b/framework/validators/NumberValidator.php
index edf9dfc0ff..cf5b7c0cb8 100644
--- a/framework/validators/NumberValidator.php
+++ b/framework/validators/NumberValidator.php
@@ -130,7 +130,7 @@ class NumberValidator extends Validator
     /**
      * @inheritdoc
      */
-    protected function getClientOptions($model, $attribute)
+    public function getClientOptions($model, $attribute)
     {
         $label = $model->getAttributeLabel($attribute);
 
diff --git a/framework/validators/RangeValidator.php b/framework/validators/RangeValidator.php
index 66296a765c..63be6eacc6 100644
--- a/framework/validators/RangeValidator.php
+++ b/framework/validators/RangeValidator.php
@@ -117,7 +117,7 @@ class RangeValidator extends Validator
     /**
      * @inheritdoc
      */
-    protected function getClientOptions($model, $attribute)
+    public function getClientOptions($model, $attribute)
     {
         $range = [];
         foreach ($this->range as $value) {
diff --git a/framework/validators/RegularExpressionValidator.php b/framework/validators/RegularExpressionValidator.php
index b5a98e467b..60130e2685 100644
--- a/framework/validators/RegularExpressionValidator.php
+++ b/framework/validators/RegularExpressionValidator.php
@@ -74,7 +74,7 @@ class RegularExpressionValidator extends Validator
     /**
      * @inheritdoc
      */
-    protected function getClientOptions($model, $attribute)
+    public function getClientOptions($model, $attribute)
     {
         $pattern = Html::escapeJsRegularExpression($this->pattern);
 
diff --git a/framework/validators/RequiredValidator.php b/framework/validators/RequiredValidator.php
index 54e5ad8a2e..21966c5725 100644
--- a/framework/validators/RequiredValidator.php
+++ b/framework/validators/RequiredValidator.php
@@ -97,7 +97,7 @@ class RequiredValidator extends Validator
     /**
      * @inheritdoc
      */
-    protected function getClientOptions($model, $attribute)
+    public function getClientOptions($model, $attribute)
     {
         $options = [];
         if ($this->requiredValue !== null) {
diff --git a/framework/validators/StringValidator.php b/framework/validators/StringValidator.php
index 2465dcf83f..b41ae55f87 100644
--- a/framework/validators/StringValidator.php
+++ b/framework/validators/StringValidator.php
@@ -159,7 +159,7 @@ class StringValidator extends Validator
         return 'yii.validation.string(value, messages, ' . json_encode($options, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) . ');';
     }
 
-    protected function getClientOptions($model, $attribute)
+    public function getClientOptions($model, $attribute)
     {
         $label = $model->getAttributeLabel($attribute);
 
diff --git a/framework/validators/UrlValidator.php b/framework/validators/UrlValidator.php
index b6501ad5f5..8f6ef5bb19 100644
--- a/framework/validators/UrlValidator.php
+++ b/framework/validators/UrlValidator.php
@@ -125,7 +125,7 @@ class UrlValidator extends Validator
     /**
      * @inheritdoc
      */
-    protected function getClientOptions($model, $attribute)
+    public function getClientOptions($model, $attribute)
     {
         if (strpos($this->pattern, '{schemes}') !== false) {
             $pattern = str_replace('{schemes}', '(' . implode('|', $this->validSchemes) . ')', $this->pattern);
diff --git a/framework/validators/Validator.php b/framework/validators/Validator.php
index 1eb6084dec..e04d6f4994 100644
--- a/framework/validators/Validator.php
+++ b/framework/validators/Validator.php
@@ -372,7 +372,7 @@ class Validator extends Component
      * @return array the client-side validation options
      * @since 2.0.11
      */
-    protected function getClientOptions($model, $attribute)
+    public function getClientOptions($model, $attribute)
     {
         return [];
     }