diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 7d7690cfa6..206a16c8f5 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -109,7 +109,7 @@ jobs:
         uses: "shivammathur/setup-php@v2"
         with:
           coverage: "none"
-          php-version: "8.3"
+          php-version: "8.5"
 
       - uses: "ramsey/composer-install@v3"
 
diff --git a/build/composer-dependency-analyser.php b/build/composer-dependency-analyser.php
index 9819b8d3df..10e19107dd 100644
--- a/build/composer-dependency-analyser.php
+++ b/build/composer-dependency-analyser.php
@@ -12,6 +12,8 @@
 	'symfony/polyfill-php80',
 	'symfony/polyfill-php81',
 	'symfony/polyfill-php83',
+	'symfony/polyfill-php84',
+	'symfony/polyfill-php85',
 ];
 
 $pinnedToSupportPhp72 = [
diff --git a/compiler/build/scoper.inc.php b/compiler/build/scoper.inc.php
index 98138a3bca..64829f3b81 100644
--- a/compiler/build/scoper.inc.php
+++ b/compiler/build/scoper.inc.php
@@ -16,9 +16,12 @@
 	'../../stubs',
 	'../../vendor/jetbrains/phpstorm-stubs',
 	'../../vendor/phpstan/php-8-stubs/stubs',
+	// when adding new polyfills, don't forget to also append them in 'exclude-namespaces' below
 	'../../vendor/symfony/polyfill-php80',
 	'../../vendor/symfony/polyfill-php81',
 	'../../vendor/symfony/polyfill-php83',
+	'../../vendor/symfony/polyfill-php84',
+	'../../vendor/symfony/polyfill-php85',
 	'../../vendor/symfony/polyfill-mbstring',
 	'../../vendor/symfony/polyfill-intl-normalizer',
 	'../../vendor/symfony/polyfill-intl-grapheme',
@@ -246,6 +249,8 @@ function (string $filePath, string $prefix, string $content): string {
 		'Symfony\Polyfill\Php80',
 		'Symfony\Polyfill\Php81',
 		'Symfony\Polyfill\Php83',
+		'Symfony\Polyfill\Php84',
+		'Symfony\Polyfill\Php85',
 		'Symfony\Polyfill\Mbstring',
 		'Symfony\Polyfill\Intl\Normalizer',
 		'Symfony\Polyfill\Intl\Grapheme',
diff --git a/composer.json b/composer.json
index ceac308215..2df3f6a6a2 100644
--- a/composer.json
+++ b/composer.json
@@ -47,6 +47,8 @@
 		"symfony/polyfill-php80": "^1.23",
 		"symfony/polyfill-php81": "^1.27",
 		"symfony/polyfill-php83": "^1.33",
+		"symfony/polyfill-php84": "^1.33",
+		"symfony/polyfill-php85": "^1.33",
 		"symfony/process": "^5.4.3",
 		"symfony/service-contracts": "^2.5.0",
 		"symfony/string": "^5.4.3"
diff --git a/composer.lock b/composer.lock
index 95462736f0..a8e2e75d1d 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "e7c4dc1df6f5ed59acc039a10295f2ac",
+    "content-hash": "27d4ef9cc36afbb320cdd1b9464db788",
     "packages": [
         {
             "name": "clue/ndjson-react",
@@ -4142,6 +4142,166 @@
             ],
             "time": "2025-07-08T02:45:35+00:00"
         },
+        {
+            "name": "symfony/polyfill-php84",
+            "version": "v1.33.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-php84.git",
+                "reference": "d8ced4d875142b6a7426000426b8abc631d6b191"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-php84/zipball/d8ced4d875142b6a7426000426b8abc631d6b191",
+                "reference": "d8ced4d875142b6a7426000426b8abc631d6b191",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.2"
+            },
+            "type": "library",
+            "extra": {
+                "thanks": {
+                    "url": "https://github.com/symfony/polyfill",
+                    "name": "symfony/polyfill"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php84\\": ""
+                },
+                "classmap": [
+                    "Resources/stubs"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill backporting some PHP 8.4+ features to lower PHP versions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "support": {
+                "source": "https://github.com/symfony/polyfill-php84/tree/v1.33.0"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/nicolas-grekas",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2025-06-24T13:30:11+00:00"
+        },
+        {
+            "name": "symfony/polyfill-php85",
+            "version": "v1.33.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-php85.git",
+                "reference": "d4e5fcd4ab3d998ab16c0db48e6cbb9a01993f91"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-php85/zipball/d4e5fcd4ab3d998ab16c0db48e6cbb9a01993f91",
+                "reference": "d4e5fcd4ab3d998ab16c0db48e6cbb9a01993f91",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.2"
+            },
+            "type": "library",
+            "extra": {
+                "thanks": {
+                    "url": "https://github.com/symfony/polyfill",
+                    "name": "symfony/polyfill"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php85\\": ""
+                },
+                "classmap": [
+                    "Resources/stubs"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill backporting some PHP 8.5+ features to lower PHP versions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "support": {
+                "source": "https://github.com/symfony/polyfill-php85/tree/v1.33.0"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/nicolas-grekas",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2025-06-23T16:12:55+00:00"
+        },
         {
             "name": "symfony/process",
             "version": "v5.4.47",
diff --git a/src/Analyser/MutatingScope.php b/src/Analyser/MutatingScope.php
index 88ff702a1e..9eaff99386 100644
--- a/src/Analyser/MutatingScope.php
+++ b/src/Analyser/MutatingScope.php
@@ -3779,7 +3779,7 @@ private function enterAnonymousFunctionWithoutReflection(
 				if (isset($callableParameters[$i])) {
 					$parameterType = self::intersectButNotNever($parameterType, $callableParameters[$i]->getType());
 				} elseif (count($callableParameters) > 0) {
-					$lastParameter = $callableParameters[count($callableParameters) - 1];
+					$lastParameter = array_last($callableParameters);
 					if ($lastParameter->isVariadic()) {
 						$parameterType = self::intersectButNotNever($parameterType, $lastParameter->getType());
 					} else {
@@ -3972,7 +3972,7 @@ private function enterArrowFunctionWithoutReflection(Expr\ArrowFunction $arrowFu
 				if (isset($callableParameters[$i])) {
 					$parameterType = self::intersectButNotNever($parameterType, $callableParameters[$i]->getType());
 				} elseif (count($callableParameters) > 0) {
-					$lastParameter = $callableParameters[count($callableParameters) - 1];
+					$lastParameter = array_last($callableParameters);
 					if ($lastParameter->isVariadic()) {
 						$parameterType = self::intersectButNotNever($parameterType, $lastParameter->getType());
 					} else {
diff --git a/src/Analyser/NodeScopeResolver.php b/src/Analyser/NodeScopeResolver.php
index 1d833752b0..c91365fcf1 100644
--- a/src/Analyser/NodeScopeResolver.php
+++ b/src/Analyser/NodeScopeResolver.php
@@ -1481,7 +1481,7 @@ private function processStmtNode(
 
 			$bodyScope = $initScope;
 			$isIterableAtLeastOnce = TrinaryLogic::createYes();
-			$lastCondExpr = $stmt->cond[count($stmt->cond) - 1] ?? null;
+			$lastCondExpr = array_last($stmt->cond) ?? null;
 			foreach ($stmt->cond as $condExpr) {
 				$condResult = $this->processExprNode($stmt, $condExpr, $bodyScope, static function (): void {
 				}, ExpressionContext::createDeep());
@@ -5239,7 +5239,7 @@ private function processArgs(
 					}
 					$parameter = $parameters[$i];
 				} elseif (count($parameters) > 0 && $parametersAcceptor->isVariadic()) {
-					$lastParameter = $parameters[count($parameters) - 1];
+					$lastParameter = array_last($parameters);
 					$assignByReference = $lastParameter->passedByReference()->createsNewVariable();
 					$parameterType = $lastParameter->getType();
 
@@ -5432,7 +5432,7 @@ private function processArgs(
 			if (isset($parameters[$i])) {
 				$currentParameter = $parameters[$i];
 			} elseif (count($parameters) > 0 && $parametersAcceptor->isVariadic()) {
-				$currentParameter = $parameters[count($parameters) - 1];
+				$currentParameter = array_last($parameters);
 			}
 
 			if ($currentParameter !== null) {
diff --git a/src/Analyser/TypeSpecifier.php b/src/Analyser/TypeSpecifier.php
index 1e22d530a4..6698a8a800 100644
--- a/src/Analyser/TypeSpecifier.php
+++ b/src/Analyser/TypeSpecifier.php
@@ -1517,7 +1517,7 @@ private function specifyTypesFromAsserts(TypeSpecifierContext $context, Expr\Cal
 			} elseif (isset($parameters[$i])) {
 				$paramName = $parameters[$i]->getName();
 			} elseif (count($parameters) > 0 && $parametersAcceptor->isVariadic()) {
-				$lastParameter = $parameters[count($parameters) - 1];
+				$lastParameter = array_last($parameters);
 				$paramName = $lastParameter->getName();
 			} else {
 				continue;
diff --git a/src/Fixable/PhpPrinter.php b/src/Fixable/PhpPrinter.php
index 4407c15d75..5bee2a187c 100644
--- a/src/Fixable/PhpPrinter.php
+++ b/src/Fixable/PhpPrinter.php
@@ -24,7 +24,7 @@ protected function pCommaSeparated(array $nodes): string
 		if (count($nodes) === 0) {
 			return $result;
 		}
-		$last = $nodes[count($nodes) - 1];
+		$last = array_last($nodes);
 
 		$trailingComma = $last->getAttribute(self::FUNC_ARGS_TRAILING_COMMA_ATTRIBUTE);
 		if ($trailingComma === false) {
diff --git a/src/Parser/LastConditionVisitor.php b/src/Parser/LastConditionVisitor.php
index f122206e0b..9338df9b60 100644
--- a/src/Parser/LastConditionVisitor.php
+++ b/src/Parser/LastConditionVisitor.php
@@ -87,7 +87,7 @@ public function enterNode(Node $node): ?Node
 			}
 
 			$if = $statements[$statementCount - 2];
-			$cond = count($if->elseifs) > 0 ? $if->elseifs[count($if->elseifs) - 1]->cond : $if->cond;
+			$cond = count($if->elseifs) > 0 ? array_last($if->elseifs)->cond : $if->cond;
 			$cond->setAttribute(self::ATTRIBUTE_NAME, true);
 		}
 
diff --git a/src/Parser/TryCatchTypeVisitor.php b/src/Parser/TryCatchTypeVisitor.php
index df2c8f4210..c6323c09c1 100644
--- a/src/Parser/TryCatchTypeVisitor.php
+++ b/src/Parser/TryCatchTypeVisitor.php
@@ -31,7 +31,7 @@ public function enterNode(Node $node): ?Node
 	{
 		if ($node instanceof Node\Stmt || $node instanceof Node\Expr\Match_) {
 			if (count($this->typeStack) > 0) {
-				$node->setAttribute(self::ATTRIBUTE_NAME, $this->typeStack[count($this->typeStack) - 1]);
+				$node->setAttribute(self::ATTRIBUTE_NAME, array_last($this->typeStack));
 			}
 		}
 
diff --git a/src/Parser/VariadicMethodsVisitor.php b/src/Parser/VariadicMethodsVisitor.php
index e82e6dfb6b..945c929a8f 100644
--- a/src/Parser/VariadicMethodsVisitor.php
+++ b/src/Parser/VariadicMethodsVisitor.php
@@ -11,7 +11,6 @@
 use PHPStan\Reflection\ParametersAcceptor;
 use function array_key_exists;
 use function array_pop;
-use function count;
 use function in_array;
 use function sprintf;
 
@@ -74,7 +73,7 @@ public function enterNode(Node $node): ?Node
 			$this->inMethodStack[] = $node->name->name;
 		}
 
-		$lastMethod = $this->inMethodStack[count($this->inMethodStack) - 1] ?? null;
+		$lastMethod = array_last($this->inMethodStack) ?? null;
 
 		if (
 			$lastMethod !== null
@@ -82,7 +81,7 @@ public function enterNode(Node $node): ?Node
 			&& $node->name instanceof Name
 			&& in_array((string) $node->name, ParametersAcceptor::VARIADIC_FUNCTIONS, true)
 		) {
-			$lastClass = $this->classStack[count($this->classStack) - 1] ?? null;
+			$lastClass = array_last($this->classStack) ?? null;
 			if ($lastClass !== null) {
 				if (
 					!array_key_exists($lastClass, $this->variadicMethods)
@@ -101,8 +100,8 @@ public function enterNode(Node $node): ?Node
 	public function leaveNode(Node $node): ?Node
 	{
 		if ($node instanceof ClassMethod) {
-			$lastClass = $this->classStack[count($this->classStack) - 1] ?? null;
-			$lastMethod = $this->inMethodStack[count($this->inMethodStack) - 1] ?? null;
+			$lastClass = array_last($this->classStack) ?? null;
+			$lastMethod = array_last($this->inMethodStack) ?? null;
 			if ($lastClass !== null && $lastMethod !== null) {
 				$this->variadicMethods[$lastClass][$lastMethod] ??= false;
 			}
diff --git a/src/Reflection/AttributeReflectionFactory.php b/src/Reflection/AttributeReflectionFactory.php
index 5cd5cd9cb9..dbecc921c6 100644
--- a/src/Reflection/AttributeReflectionFactory.php
+++ b/src/Reflection/AttributeReflectionFactory.php
@@ -107,7 +107,7 @@ private function fromNameAndArgumentExpressions(string $name, array $arguments,
 					continue;
 				}
 				if (count($parameters) > 0) {
-					$lastParameter = $parameters[count($parameters) - 1];
+					$lastParameter = array_last($parameters);
 					if ($lastParameter->isVariadic()) {
 						$parameterName = $lastParameter->getName();
 						if (array_key_exists($parameterName, $namedArgTypes)) {
diff --git a/src/Reflection/GenericParametersAcceptorResolver.php b/src/Reflection/GenericParametersAcceptorResolver.php
index 784b1427d1..375a3db71a 100644
--- a/src/Reflection/GenericParametersAcceptorResolver.php
+++ b/src/Reflection/GenericParametersAcceptorResolver.php
@@ -39,7 +39,7 @@ public static function resolve(array $argTypes, ParametersAcceptor $parametersAc
 					continue;
 				}
 				if (count($parameters) > 0) {
-					$lastParameter = $parameters[count($parameters) - 1];
+					$lastParameter = array_last($parameters);
 					if ($lastParameter->isVariadic()) {
 						$parameterName = $lastParameter->getName();
 						if (array_key_exists($parameterName, $namedArgTypes)) {
diff --git a/src/Reflection/ParametersAcceptorSelector.php b/src/Reflection/ParametersAcceptorSelector.php
index f6c3058cc2..3ae3dbf9d3 100644
--- a/src/Reflection/ParametersAcceptorSelector.php
+++ b/src/Reflection/ParametersAcceptorSelector.php
@@ -490,7 +490,7 @@ public static function selectFromArgs(
 				if (isset($parameters[$i])) {
 					$parameter = $parameters[$i];
 				} elseif (count($parameters) > 0 && $singleParametersAcceptor->isVariadic()) {
-					$parameter = $parameters[count($parameters) - 1];
+					$parameter = array_last($parameters);
 				}
 			}
 
diff --git a/src/Rules/FunctionCallParametersCheck.php b/src/Rules/FunctionCallParametersCheck.php
index 5c3821aa4f..a133df2060 100644
--- a/src/Rules/FunctionCallParametersCheck.php
+++ b/src/Rules/FunctionCallParametersCheck.php
@@ -586,8 +586,8 @@ private function processArguments(
 						break;
 					}
 
-					$parameter = $parameters[count($parameters) - 1];
-					$originalParameter = $originalParameters[count($originalParameters) - 1];
+					$parameter = array_last($parameters);
+					$originalParameter = array_last($originalParameters);
 					if (!$parameter->isVariadic()) {
 						$newArguments[$i] = [$argumentValue, $argumentValueType, $unpack, $argumentName, $argumentLine, null, null];
 						break; // func_get_args
diff --git a/src/Rules/Whitespace/FileWhitespaceRule.php b/src/Rules/Whitespace/FileWhitespaceRule.php
index ee067b1ceb..c718256ea3 100644
--- a/src/Rules/Whitespace/FileWhitespaceRule.php
+++ b/src/Rules/Whitespace/FileWhitespaceRule.php
@@ -56,13 +56,13 @@ public function enterNode(Node $node)
 			{
 				if ($node instanceof Node\Stmt\Declare_) {
 					if ($node->stmts !== null && count($node->stmts) > 0) {
-						$this->lastNodes[] = $node->stmts[count($node->stmts) - 1];
+						$this->lastNodes[] = array_last($node->stmts);
 					}
 					return null;
 				}
 				if ($node instanceof Node\Stmt\Namespace_) {
 					if (count($node->stmts) > 0) {
-						$this->lastNodes[] = $node->stmts[count($node->stmts) - 1];
+						$this->lastNodes[] = array_last($node->stmts);
 					}
 					return null;
 				}
@@ -82,7 +82,7 @@ public function getLastNodes(): array
 		$nodeTraverser->traverse($nodes);
 
 		$lastNodes = $visitor->getLastNodes();
-		$lastNodes[] = $nodes[count($nodes) - 1];
+		$lastNodes[] = array_last($nodes);
 		foreach ($lastNodes as $lastNode) {
 			if (!$lastNode instanceof Node\Stmt\InlineHTML || Strings::match($lastNode->value, '#^(\s+)$#') === null) {
 				continue;
diff --git a/src/Type/FileTypeMapper.php b/src/Type/FileTypeMapper.php
index 2ce66f1e1a..c22758d359 100644
--- a/src/Type/FileTypeMapper.php
+++ b/src/Type/FileTypeMapper.php
@@ -309,8 +309,8 @@ function (Node $node) use ($fileName, $lookForTrait, &$traitFound, $traitMethodA
 					}
 				}
 
-				$className = $classStack[count($classStack) - 1] ?? null;
-				$functionName = $functionStack[count($functionStack) - 1] ?? null;
+				$className = array_last($classStack) ?? null;
+				$functionName = array_last($functionStack) ?? null;
 
 				if ($node instanceof Node\Stmt\ClassLike || $node instanceof Node\Stmt\ClassMethod || $node instanceof Node\Stmt\Function_) {
 					$docComment = GetLastDocComment::forNode($node);
@@ -378,7 +378,7 @@ function (Node $node) use ($fileName, $lookForTrait, &$traitFound, $traitMethodA
 							continue;
 						}
 
-						$className = $classStack[count($classStack) - 1] ?? null;
+						$className = array_last($classStack) ?? null;
 						if ($className === null) {
 							throw new ShouldNotHappenException();
 						}
@@ -531,8 +531,8 @@ function (Node $node) use ($fileName, $lookForTrait, $phpDocNodeMap, &$traitFoun
 					}
 				}
 
-				$className = $classStack[count($classStack) - 1] ?? null;
-				$functionName = $functionStack[count($functionStack) - 1] ?? null;
+				$className = array_last($classStack) ?? null;
+				$functionName = array_last($functionStack) ?? null;
 				$nameScopeKey = $this->getNameScopeKey($originalClassFileName, $className, $lookForTrait, $functionName);
 
 				if ($node instanceof Node\Stmt\ClassLike || $node instanceof Node\Stmt\ClassMethod || $node instanceof Node\Stmt\Function_) {
@@ -540,9 +540,9 @@ function (Node $node) use ($fileName, $lookForTrait, $phpDocNodeMap, &$traitFoun
 					if (array_key_exists($nameScopeKey, $phpDocNodeMap)) {
 						$phpDocNode = $phpDocNodeMap[$nameScopeKey];
 						$typeMapStack[] = function () use ($namespace, $uses, $className, $lookForTrait, $functionName, $phpDocNode, $typeMapStack, $typeAliasStack, $constUses): TemplateTypeMap {
-							$typeMapCb = $typeMapStack[count($typeMapStack) - 1] ?? null;
+							$typeMapCb = array_last($typeMapStack) ?? null;
 							$currentTypeMap = $typeMapCb !== null ? $typeMapCb() : null;
-							$typeAliasesMap = $typeAliasStack[count($typeAliasStack) - 1] ?? [];
+							$typeAliasesMap = array_last($typeAliasStack) ?? [];
 							$nameScope = new NameScope($namespace, $uses, $className, $functionName, $currentTypeMap, $typeAliasesMap, constUses: $constUses, typeAliasClassName: $lookForTrait);
 							$templateTags = $this->phpDocNodeResolver->resolveTemplateTags($phpDocNode, $nameScope);
 							$templateTypeScope = $nameScope->getTemplateTypeScope();
@@ -562,8 +562,8 @@ function (Node $node) use ($fileName, $lookForTrait, $phpDocNodeMap, &$traitFoun
 					}
 				}
 
-				$typeMapCb = $typeMapStack[count($typeMapStack) - 1] ?? null;
-				$typeAliasesMap = $typeAliasStack[count($typeAliasStack) - 1] ?? [];
+				$typeMapCb = array_last($typeMapStack) ?? null;
+				$typeAliasesMap = array_last($typeAliasStack) ?? [];
 
 				if (
 					(
@@ -671,7 +671,7 @@ function (Node $node) use ($fileName, $lookForTrait, $phpDocNodeMap, &$traitFoun
 							continue;
 						}
 
-						$className = $classStack[count($classStack) - 1] ?? null;
+						$className = array_last($classStack) ?? null;
 						if ($className === null) {
 							throw new ShouldNotHappenException();
 						}
diff --git a/tests/PHPStan/Composer/AutoloadFilesTest.php b/tests/PHPStan/Composer/AutoloadFilesTest.php
index 7b87a7896a..4af7c6b0bf 100644
--- a/tests/PHPStan/Composer/AutoloadFilesTest.php
+++ b/tests/PHPStan/Composer/AutoloadFilesTest.php
@@ -69,6 +69,8 @@ public function testExpectedFiles(): void
 			'symfony/polyfill-php80/bootstrap.php', // afaik polyfills aren't necessary
 			'symfony/polyfill-php81/bootstrap.php', // afaik polyfills aren't necessary
 			'symfony/polyfill-php83/bootstrap.php', // afaik polyfills aren't necessary
+			'symfony/polyfill-php84/bootstrap.php', // afaik polyfills aren't necessary
+			'symfony/polyfill-php85/bootstrap.php', // afaik polyfills aren't necessary
 			'symfony/string/Resources/functions.php', // afaik polyfills aren't necessary
 		];