diff --git a/src/Ast/PhpDoc/PhpDocNode.php b/src/Ast/PhpDoc/PhpDocNode.php
index 25f1939c..4c509f41 100644
--- a/src/Ast/PhpDoc/PhpDocNode.php
+++ b/src/Ast/PhpDoc/PhpDocNode.php
@@ -187,6 +187,31 @@ static function (PhpDocTagValueNode $value): bool {
 		);
 	}
 
+	/**
+	 * @return RequireExtendsTagValueNode[]
+	 */
+	public function getRequireExtendsTagValues(string $tagName = '@phpstan-require-extends'): array
+	{
+		return array_filter(
+			array_column($this->getTagsByName($tagName), 'value'),
+			static function (PhpDocTagValueNode $value): bool {
+				return $value instanceof RequireExtendsTagValueNode;
+			}
+		);
+	}
+
+	/**
+	 * @return RequireImplementsTagValueNode[]
+	 */
+	public function getRequireImplementsTagValues(string $tagName = '@phpstan-require-implements'): array
+	{
+		return array_filter(
+			array_column($this->getTagsByName($tagName), 'value'),
+			static function (PhpDocTagValueNode $value): bool {
+				return $value instanceof RequireImplementsTagValueNode;
+			}
+		);
+	}
 
 	/**
 	 * @return DeprecatedTagValueNode[]
diff --git a/src/Ast/PhpDoc/RequireExtendsTagValueNode.php b/src/Ast/PhpDoc/RequireExtendsTagValueNode.php
new file mode 100644
index 00000000..91c26892
--- /dev/null
+++ b/src/Ast/PhpDoc/RequireExtendsTagValueNode.php
@@ -0,0 +1,32 @@
+<?php declare(strict_types = 1);
+
+namespace PHPStan\PhpDocParser\Ast\PhpDoc;
+
+use PHPStan\PhpDocParser\Ast\NodeAttributes;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use function trim;
+
+class RequireExtendsTagValueNode implements PhpDocTagValueNode
+{
+
+	use NodeAttributes;
+
+	/** @var TypeNode */
+	public $type;
+
+	/** @var string (may be empty) */
+	public $description;
+
+	public function __construct(TypeNode $type, string $description)
+	{
+		$this->type = $type;
+		$this->description = $description;
+	}
+
+
+	public function __toString(): string
+	{
+		return trim("{$this->type} {$this->description}");
+	}
+
+}
diff --git a/src/Ast/PhpDoc/RequireImplementsTagValueNode.php b/src/Ast/PhpDoc/RequireImplementsTagValueNode.php
new file mode 100644
index 00000000..65c9213f
--- /dev/null
+++ b/src/Ast/PhpDoc/RequireImplementsTagValueNode.php
@@ -0,0 +1,32 @@
+<?php declare(strict_types = 1);
+
+namespace PHPStan\PhpDocParser\Ast\PhpDoc;
+
+use PHPStan\PhpDocParser\Ast\NodeAttributes;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use function trim;
+
+class RequireImplementsTagValueNode implements PhpDocTagValueNode
+{
+
+	use NodeAttributes;
+
+	/** @var TypeNode */
+	public $type;
+
+	/** @var string (may be empty) */
+	public $description;
+
+	public function __construct(TypeNode $type, string $description)
+	{
+		$this->type = $type;
+		$this->description = $description;
+	}
+
+
+	public function __toString(): string
+	{
+		return trim("{$this->type} {$this->description}");
+	}
+
+}
diff --git a/src/Parser/PhpDocParser.php b/src/Parser/PhpDocParser.php
index 15a2aa5c..e87d92c4 100644
--- a/src/Parser/PhpDocParser.php
+++ b/src/Parser/PhpDocParser.php
@@ -408,6 +408,16 @@ public function parseTagValue(TokenIterator $tokens, string $tag): Ast\PhpDoc\Ph
 					$tagValue = $this->parseMixinTagValue($tokens);
 					break;
 
+				case '@psalm-require-extends':
+				case '@phpstan-require-extends':
+					$tagValue = $this->parseRequireExtendsTagValue($tokens);
+					break;
+
+				case '@psalm-require-implements':
+				case '@phpstan-require-implements':
+					$tagValue = $this->parseRequireImplementsTagValue($tokens);
+					break;
+
 				case '@deprecated':
 					$tagValue = $this->parseDeprecatedTagValue($tokens);
 					break;
@@ -877,6 +887,20 @@ private function parseMixinTagValue(TokenIterator $tokens): Ast\PhpDoc\MixinTagV
 		return new Ast\PhpDoc\MixinTagValueNode($type, $description);
 	}
 
+	private function parseRequireExtendsTagValue(TokenIterator $tokens): Ast\PhpDoc\RequireExtendsTagValueNode
+	{
+		$type = $this->typeParser->parse($tokens);
+		$description = $this->parseOptionalDescription($tokens, true);
+		return new Ast\PhpDoc\RequireExtendsTagValueNode($type, $description);
+	}
+
+	private function parseRequireImplementsTagValue(TokenIterator $tokens): Ast\PhpDoc\RequireImplementsTagValueNode
+	{
+		$type = $this->typeParser->parse($tokens);
+		$description = $this->parseOptionalDescription($tokens, true);
+		return new Ast\PhpDoc\RequireImplementsTagValueNode($type, $description);
+	}
+
 	private function parseDeprecatedTagValue(TokenIterator $tokens): Ast\PhpDoc\DeprecatedTagValueNode
 	{
 		$description = $this->parseOptionalDescription($tokens);
diff --git a/src/Printer/Printer.php b/src/Printer/Printer.php
index 57e652eb..0093e6ca 100644
--- a/src/Printer/Printer.php
+++ b/src/Printer/Printer.php
@@ -28,6 +28,8 @@
 use PHPStan\PhpDocParser\Ast\PhpDoc\PhpDocTagValueNode;
 use PHPStan\PhpDocParser\Ast\PhpDoc\PhpDocTextNode;
 use PHPStan\PhpDocParser\Ast\PhpDoc\PropertyTagValueNode;
+use PHPStan\PhpDocParser\Ast\PhpDoc\RequireExtendsTagValueNode;
+use PHPStan\PhpDocParser\Ast\PhpDoc\RequireImplementsTagValueNode;
 use PHPStan\PhpDocParser\Ast\PhpDoc\ReturnTagValueNode;
 use PHPStan\PhpDocParser\Ast\PhpDoc\SelfOutTagValueNode;
 use PHPStan\PhpDocParser\Ast\PhpDoc\TemplateTagValueNode;
@@ -283,6 +285,14 @@ private function printTagValue(PhpDocTagValueNode $node): string
 			$type = $this->printType($node->type);
 			return trim("{$type} {$node->description}");
 		}
+		if ($node instanceof RequireExtendsTagValueNode) {
+			$type = $this->printType($node->type);
+			return trim("{$type} {$node->description}");
+		}
+		if ($node instanceof RequireImplementsTagValueNode) {
+			$type = $this->printType($node->type);
+			return trim("{$type} {$node->description}");
+		}
 		if ($node instanceof ParamOutTagValueNode) {
 			$type = $this->printType($node->type);
 			return trim("{$type} {$node->parameterName} {$node->description}");
diff --git a/tests/PHPStan/Ast/ToString/PhpDocToStringTest.php b/tests/PHPStan/Ast/ToString/PhpDocToStringTest.php
index faac0616..b57b7db6 100644
--- a/tests/PHPStan/Ast/ToString/PhpDocToStringTest.php
+++ b/tests/PHPStan/Ast/ToString/PhpDocToStringTest.php
@@ -28,6 +28,8 @@
 use PHPStan\PhpDocParser\Ast\PhpDoc\PhpDocTagNode;
 use PHPStan\PhpDocParser\Ast\PhpDoc\PhpDocTextNode;
 use PHPStan\PhpDocParser\Ast\PhpDoc\PropertyTagValueNode;
+use PHPStan\PhpDocParser\Ast\PhpDoc\RequireExtendsTagValueNode;
+use PHPStan\PhpDocParser\Ast\PhpDoc\RequireImplementsTagValueNode;
 use PHPStan\PhpDocParser\Ast\PhpDoc\ReturnTagValueNode;
 use PHPStan\PhpDocParser\Ast\PhpDoc\SelfOutTagValueNode;
 use PHPStan\PhpDocParser\Ast\PhpDoc\TemplateTagValueNode;
@@ -213,6 +215,15 @@ public static function provideClassCases(): Generator
 			['Foo\\Bar Baz', new MixinTagValueNode(new IdentifierTypeNode('Foo\\Bar'), 'Baz')],
 		];
 
+		yield from [
+			['PHPUnit\\TestCase', new RequireExtendsTagValueNode(new IdentifierTypeNode('PHPUnit\\TestCase'), '')],
+			['Foo\\Bar Baz', new RequireExtendsTagValueNode(new IdentifierTypeNode('Foo\\Bar'), 'Baz')],
+		];
+		yield from [
+			['PHPUnit\\TestCase', new RequireImplementsTagValueNode(new IdentifierTypeNode('PHPUnit\\TestCase'), '')],
+			['Foo\\Bar Baz', new RequireImplementsTagValueNode(new IdentifierTypeNode('Foo\\Bar'), 'Baz')],
+		];
+
 		yield from [
 			['Foo array<string>', new TypeAliasTagValueNode('Foo', $arrayOfStrings)],
 			['Test from Foo\Bar', new TypeAliasImportTagValueNode('Test', $bar, null)],
diff --git a/tests/PHPStan/Parser/PhpDocParserTest.php b/tests/PHPStan/Parser/PhpDocParserTest.php
index 3b293f8f..67a9d123 100644
--- a/tests/PHPStan/Parser/PhpDocParserTest.php
+++ b/tests/PHPStan/Parser/PhpDocParserTest.php
@@ -35,6 +35,8 @@
 use PHPStan\PhpDocParser\Ast\PhpDoc\PhpDocTagNode;
 use PHPStan\PhpDocParser\Ast\PhpDoc\PhpDocTextNode;
 use PHPStan\PhpDocParser\Ast\PhpDoc\PropertyTagValueNode;
+use PHPStan\PhpDocParser\Ast\PhpDoc\RequireExtendsTagValueNode;
+use PHPStan\PhpDocParser\Ast\PhpDoc\RequireImplementsTagValueNode;
 use PHPStan\PhpDocParser\Ast\PhpDoc\ReturnTagValueNode;
 use PHPStan\PhpDocParser\Ast\PhpDoc\SelfOutTagValueNode;
 use PHPStan\PhpDocParser\Ast\PhpDoc\TemplateTagValueNode;
@@ -100,6 +102,8 @@ protected function setUp(): void
 	 * @dataProvider provideReturnTagsData
 	 * @dataProvider provideThrowsTagsData
 	 * @dataProvider provideMixinTagsData
+	 * @dataProvider provideRequireExtendsTagsData
+	 * @dataProvider provideRequireImplementsTagsData
 	 * @dataProvider provideDeprecatedTagsData
 	 * @dataProvider providePropertyTagsData
 	 * @dataProvider provideMethodTagsData
@@ -1908,6 +1912,138 @@ public function provideMixinTagsData(): Iterator
 		];
 	}
 
+	public function provideRequireExtendsTagsData(): Iterator
+	{
+		yield [
+			'OK without description',
+			'/** @phpstan-require-extends Foo */',
+			new PhpDocNode([
+				new PhpDocTagNode(
+					'@phpstan-require-extends',
+					new RequireExtendsTagValueNode(
+						new IdentifierTypeNode('Foo'),
+						''
+					)
+				),
+			]),
+		];
+
+		yield [
+			'OK with description',
+			'/** @phpstan-require-extends Foo optional description */',
+			new PhpDocNode([
+				new PhpDocTagNode(
+					'@phpstan-require-extends',
+					new RequireExtendsTagValueNode(
+						new IdentifierTypeNode('Foo'),
+						'optional description'
+					)
+				),
+			]),
+		];
+
+		yield [
+			'OK with psalm-prefix description',
+			'/** @psalm-require-extends Foo optional description */',
+			new PhpDocNode([
+				new PhpDocTagNode(
+					'@psalm-require-extends',
+					new RequireExtendsTagValueNode(
+						new IdentifierTypeNode('Foo'),
+						'optional description'
+					)
+				),
+			]),
+		];
+
+		yield [
+			'invalid without type and description',
+			'/** @phpstan-require-extends */',
+			new PhpDocNode([
+				new PhpDocTagNode(
+					'@phpstan-require-extends',
+					new InvalidTagValueNode(
+						'',
+						new ParserException(
+							'*/',
+							Lexer::TOKEN_CLOSE_PHPDOC,
+							29,
+							Lexer::TOKEN_IDENTIFIER,
+							null,
+							1
+						)
+					)
+				),
+			]),
+		];
+	}
+
+	public function provideRequireImplementsTagsData(): Iterator
+	{
+		yield [
+			'OK without description',
+			'/** @phpstan-require-implements Foo */',
+			new PhpDocNode([
+				new PhpDocTagNode(
+					'@phpstan-require-implements',
+					new RequireImplementsTagValueNode(
+						new IdentifierTypeNode('Foo'),
+						''
+					)
+				),
+			]),
+		];
+
+		yield [
+			'OK with description',
+			'/** @phpstan-require-implements Foo optional description */',
+			new PhpDocNode([
+				new PhpDocTagNode(
+					'@phpstan-require-implements',
+					new RequireImplementsTagValueNode(
+						new IdentifierTypeNode('Foo'),
+						'optional description'
+					)
+				),
+			]),
+		];
+
+		yield [
+			'OK with psalm-prefix description',
+			'/** @psalm-require-implements Foo optional description */',
+			new PhpDocNode([
+				new PhpDocTagNode(
+					'@psalm-require-implements',
+					new RequireImplementsTagValueNode(
+						new IdentifierTypeNode('Foo'),
+						'optional description'
+					)
+				),
+			]),
+		];
+
+		yield [
+			'invalid without type and description',
+			'/** @phpstan-require-implements */',
+			new PhpDocNode([
+				new PhpDocTagNode(
+					'@phpstan-require-implements',
+					new InvalidTagValueNode(
+						'',
+						new ParserException(
+							'*/',
+							Lexer::TOKEN_CLOSE_PHPDOC,
+							32,
+							Lexer::TOKEN_IDENTIFIER,
+							null,
+							1
+						)
+					)
+				),
+			]),
+		];
+	}
+
 	public function provideDeprecatedTagsData(): Iterator
 	{
 		yield [