diff --git a/config/set/php85.php b/config/set/php85.php
index 074c18b2af9..be4cad3a560 100644
--- a/config/set/php85.php
+++ b/config/set/php85.php
@@ -11,6 +11,7 @@
 use Rector\Php85\Rector\ClassMethod\NullDebugInfoReturnRector;
 use Rector\Php85\Rector\Const_\DeprecatedAnnotationToDeprecatedAttributeRector;
 use Rector\Php85\Rector\FuncCall\ArrayKeyExistsNullToEmptyStringRector;
+use Rector\Php85\Rector\FuncCall\ChrArgModuloRector;
 use Rector\Php85\Rector\FuncCall\RemoveFinfoBufferContextArgRector;
 use Rector\Php85\Rector\Switch_\ColonAfterSwitchCaseRector;
 use Rector\Removing\Rector\FuncCall\RemoveFuncCallArgRector;
@@ -34,6 +35,7 @@
             DeprecatedAnnotationToDeprecatedAttributeRector::class,
             ColonAfterSwitchCaseRector::class,
             ArrayKeyExistsNullToEmptyStringRector::class,
+            ChrArgModuloRector::class,
         ]
     );
 
diff --git a/rules-tests/Php85/Rector/FuncCall/ChrArgModuloRector/ChrArgModuloRectorTest.php b/rules-tests/Php85/Rector/FuncCall/ChrArgModuloRector/ChrArgModuloRectorTest.php
new file mode 100644
index 00000000000..093a907ccf2
--- /dev/null
+++ b/rules-tests/Php85/Rector/FuncCall/ChrArgModuloRector/ChrArgModuloRectorTest.php
@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Tests\Php85\Rector\FuncCall\ChrArgModuloRector;
+
+use Iterator;
+use PHPUnit\Framework\Attributes\DataProvider;
+use Rector\Testing\PHPUnit\AbstractRectorTestCase;
+
+final class ChrArgModuloRectorTest extends AbstractRectorTestCase
+{
+    #[DataProvider('provideData')]
+    public function test(string $filePath): void
+    {
+        $this->doTestFile($filePath);
+    }
+
+    public static function provideData(): Iterator
+    {
+        return self::yieldFilesFromDirectory(__DIR__ . '/Fixture');
+    }
+
+    public function provideConfigFilePath(): string
+    {
+        return __DIR__ . '/config/configured_rule.php';
+    }
+}
diff --git a/rules-tests/Php85/Rector/FuncCall/ChrArgModuloRector/Fixture/chr.php.inc b/rules-tests/Php85/Rector/FuncCall/ChrArgModuloRector/Fixture/chr.php.inc
new file mode 100644
index 00000000000..320ac129c3a
--- /dev/null
+++ b/rules-tests/Php85/Rector/FuncCall/ChrArgModuloRector/Fixture/chr.php.inc
@@ -0,0 +1,11 @@
+<?php
+namespace Rector\Tests\Php85\Rector\FuncCall\ChrArgModuloRector\Fixture;
+
+echo chr(300);
+?>
+-----
+<?php
+namespace Rector\Tests\Php85\Rector\FuncCall\ChrArgModuloRector\Fixture;
+
+echo chr(300 % 256);
+?>
\ No newline at end of file
diff --git a/rules-tests/Php85/Rector/FuncCall/ChrArgModuloRector/Fixture/chr_var.php.inc b/rules-tests/Php85/Rector/FuncCall/ChrArgModuloRector/Fixture/chr_var.php.inc
new file mode 100644
index 00000000000..2e9bae1ede9
--- /dev/null
+++ b/rules-tests/Php85/Rector/FuncCall/ChrArgModuloRector/Fixture/chr_var.php.inc
@@ -0,0 +1,13 @@
+<?php
+namespace Rector\Tests\Php85\Rector\FuncCall\ChrArgModuloRector\Fixture;
+
+$n = 400;
+echo chr($n);
+?>
+-----
+<?php
+namespace Rector\Tests\Php85\Rector\FuncCall\ChrArgModuloRector\Fixture;
+
+$n = 400;
+echo chr($n % 256);
+?>
\ No newline at end of file
diff --git a/rules-tests/Php85/Rector/FuncCall/ChrArgModuloRector/Fixture/skip_chr_inbond.php.inc b/rules-tests/Php85/Rector/FuncCall/ChrArgModuloRector/Fixture/skip_chr_inbond.php.inc
new file mode 100644
index 00000000000..c303cdffff7
--- /dev/null
+++ b/rules-tests/Php85/Rector/FuncCall/ChrArgModuloRector/Fixture/skip_chr_inbond.php.inc
@@ -0,0 +1,5 @@
+<?php
+namespace Rector\Tests\Php85\Rector\FuncCall\ChrArgModuloRector\Fixture;
+
+echo chr(44);
+?>
\ No newline at end of file
diff --git a/rules-tests/Php85/Rector/FuncCall/ChrArgModuloRector/config/configured_rule.php b/rules-tests/Php85/Rector/FuncCall/ChrArgModuloRector/config/configured_rule.php
new file mode 100644
index 00000000000..15d2a0b412f
--- /dev/null
+++ b/rules-tests/Php85/Rector/FuncCall/ChrArgModuloRector/config/configured_rule.php
@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+use Rector\Config\RectorConfig;
+use Rector\Php85\Rector\FuncCall\ChrArgModuloRector;
+use Rector\ValueObject\PhpVersion;
+
+return static function (RectorConfig $rectorConfig): void {
+    $rectorConfig->rule(ChrArgModuloRector::class);
+
+    $rectorConfig->phpVersion(PhpVersion::PHP_85);
+};
diff --git a/rules/Php85/Rector/FuncCall/ChrArgModuloRector.php b/rules/Php85/Rector/FuncCall/ChrArgModuloRector.php
new file mode 100644
index 00000000000..8a36f3085c7
--- /dev/null
+++ b/rules/Php85/Rector/FuncCall/ChrArgModuloRector.php
@@ -0,0 +1,97 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Php85\Rector\FuncCall;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\BinaryOp\Mod;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Scalar\LNumber;
+use Rector\PhpParser\Node\Value\ValueResolver;
+use Rector\Rector\AbstractRector;
+use Rector\ValueObject\PhpVersionFeature;
+use Rector\VersionBonding\Contract\MinPhpVersionInterface;
+use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
+use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
+
+/**
+ * @see https://wiki.php.net/rfc/deprecations_php_8_5#deprecate_passing_integers_outside_the_interval_0_255_to_chr
+ * @see \Rector\Tests\Php85\Rector\FuncCall\ChrArgModuloRector\ChrArgModuloRectorTest
+ */
+final class ChrArgModuloRector extends AbstractRector implements MinPhpVersionInterface
+{
+    public function __construct(
+        private readonly ValueResolver $valueResolver
+    ){
+
+    }
+
+    public function getRuleDefinition(): RuleDefinition
+    {
+        return new RuleDefinition(
+            'Wrap chr() argument with % 256 to avoid deprecated out-of-range integers',
+            [
+                new CodeSample(
+                    <<<'CODE_SAMPLE'
+echo chr(300);
+CODE_SAMPLE
+                    ,
+                    <<<'CODE_SAMPLE'
+echo chr(300 % 256);
+CODE_SAMPLE
+                ),
+            ]
+        );
+    }
+
+    public function getNodeTypes(): array
+    {
+        return [FuncCall::class];
+    }
+
+    /**
+     * @param FuncCall $node
+     */
+    public function refactor(Node $node): ?Node
+    {
+        if ($node->isFirstClassCallable()) {
+            return null;
+        }
+
+        if (! $this->isName($node, 'chr')) {
+            return null;
+        }
+
+        $args = $node->getArgs();
+
+        if (! isset($node->args[0])) {
+            return null;
+        }
+
+        $argExpr = $args[0]->value;
+
+        if ($argExpr instanceof Mod) {
+            return null;
+        }
+
+        $value = $this->valueResolver->getValue($argExpr);
+        if (! is_int($value)) {
+            return null;
+        }
+
+        if ( $value >= 0 && $value <= 255) {
+            return null;
+        }
+
+        $args[0]->value = new Mod($argExpr, new LNumber(256));
+        $node->args = $args;
+
+        return $node;
+    }
+
+    public function provideMinPhpVersion(): int
+    {
+        return PhpVersionFeature::DEPRECATE_OUTSIDE_INTERVEL_VAL_IN_CHR_FUNCTION;
+    }
+}
diff --git a/src/ValueObject/PhpVersionFeature.php b/src/ValueObject/PhpVersionFeature.php
index 1c72c63d39b..b76487f4a62 100644
--- a/src/ValueObject/PhpVersionFeature.php
+++ b/src/ValueObject/PhpVersionFeature.php
@@ -798,4 +798,10 @@ final class PhpVersionFeature
      * @var int
      */
     public const DEPRECATE_NULL_ARG_IN_ARRAY_KEY_EXISTS_FUNCTION = PhpVersion::PHP_85;
+
+    /**
+     * @see https://wiki.php.net/rfc/deprecations_php_8_5#eprecate_passing_integers_outside_the_interval_0_255_to_chr
+     * @var int
+     */
+    public const DEPRECATE_OUTSIDE_INTERVEL_VAL_IN_CHR_FUNCTION = PhpVersion::PHP_85;
 }