diff --git a/src/Rules/Symfony/InvalidArgumentDefaultValueRule.php b/src/Rules/Symfony/InvalidArgumentDefaultValueRule.php
index 27643a7d..5435d4c9 100644
--- a/src/Rules/Symfony/InvalidArgumentDefaultValueRule.php
+++ b/src/Rules/Symfony/InvalidArgumentDefaultValueRule.php
@@ -13,7 +13,6 @@
 use PHPStan\Type\NullType;
 use PHPStan\Type\ObjectType;
 use PHPStan\Type\StringType;
-use PHPStan\Type\TypeUtils;
 use PHPStan\Type\UnionType;
 use PHPStan\Type\VerbosityLevel;
 use function count;
@@ -46,7 +45,7 @@ public function processNode(Node $node, Scope $scope): array
 		if ($modeType->isNull()->yes()) {
 			$modeType = new ConstantIntegerType(2); // InputArgument::OPTIONAL
 		}
-		$modeTypes = TypeUtils::getConstantScalars($modeType);
+		$modeTypes = $modeType->getConstantScalarTypes();
 		if (count($modeTypes) !== 1) {
 			return [];
 		}
diff --git a/src/Rules/Symfony/InvalidOptionDefaultValueRule.php b/src/Rules/Symfony/InvalidOptionDefaultValueRule.php
index 152514f1..2e3dc0e9 100644
--- a/src/Rules/Symfony/InvalidOptionDefaultValueRule.php
+++ b/src/Rules/Symfony/InvalidOptionDefaultValueRule.php
@@ -15,7 +15,6 @@
 use PHPStan\Type\NullType;
 use PHPStan\Type\ObjectType;
 use PHPStan\Type\StringType;
-use PHPStan\Type\TypeUtils;
 use PHPStan\Type\UnionType;
 use PHPStan\Type\VerbosityLevel;
 use function count;
@@ -48,7 +47,7 @@ public function processNode(Node $node, Scope $scope): array
 		if ($modeType->isNull()->yes()) {
 			$modeType = new ConstantIntegerType(1); // InputOption::VALUE_NONE
 		}
-		$modeTypes = TypeUtils::getConstantScalars($modeType);
+		$modeTypes = $modeType->getConstantScalarTypes();
 		if (count($modeTypes) !== 1) {
 			return [];
 		}
diff --git a/src/Rules/Symfony/UndefinedArgumentRule.php b/src/Rules/Symfony/UndefinedArgumentRule.php
index ff997be5..bccbb515 100644
--- a/src/Rules/Symfony/UndefinedArgumentRule.php
+++ b/src/Rules/Symfony/UndefinedArgumentRule.php
@@ -12,7 +12,6 @@
 use PHPStan\Symfony\ConsoleApplicationResolver;
 use PHPStan\Type\ObjectType;
 use PHPStan\Type\Symfony\Helper;
-use PHPStan\Type\TypeUtils;
 use function count;
 use function sprintf;
 
@@ -58,7 +57,7 @@ public function processNode(Node $node, Scope $scope): array
 		}
 
 		$argType = $scope->getType($node->getArgs()[0]->value);
-		$argStrings = TypeUtils::getConstantStrings($argType);
+		$argStrings = $argType->getConstantStrings();
 		if (count($argStrings) !== 1) {
 			return [];
 		}
diff --git a/src/Rules/Symfony/UndefinedOptionRule.php b/src/Rules/Symfony/UndefinedOptionRule.php
index ae96bfa9..f9f88a30 100644
--- a/src/Rules/Symfony/UndefinedOptionRule.php
+++ b/src/Rules/Symfony/UndefinedOptionRule.php
@@ -12,7 +12,6 @@
 use PHPStan\Symfony\ConsoleApplicationResolver;
 use PHPStan\Type\ObjectType;
 use PHPStan\Type\Symfony\Helper;
-use PHPStan\Type\TypeUtils;
 use function count;
 use function sprintf;
 
@@ -58,7 +57,7 @@ public function processNode(Node $node, Scope $scope): array
 		}
 
 		$optType = $scope->getType($node->getArgs()[0]->value);
-		$optStrings = TypeUtils::getConstantStrings($optType);
+		$optStrings = $optType->getConstantStrings();
 		if (count($optStrings) !== 1) {
 			return [];
 		}
diff --git a/src/Symfony/DefaultParameterMap.php b/src/Symfony/DefaultParameterMap.php
index 8d0af459..3149fd7d 100644
--- a/src/Symfony/DefaultParameterMap.php
+++ b/src/Symfony/DefaultParameterMap.php
@@ -5,7 +5,6 @@
 use PhpParser\Node\Expr;
 use PHPStan\Analyser\Scope;
 use PHPStan\Type\Type;
-use PHPStan\Type\TypeUtils;
 use function array_map;
 
 final class DefaultParameterMap implements ParameterMap
@@ -37,7 +36,7 @@ public function getParameter(string $key): ?ParameterDefinition
 
 	public static function getParameterKeysFromNode(Expr $node, Scope $scope): array
 	{
-		$strings = TypeUtils::getConstantStrings($scope->getType($node));
+		$strings = $scope->getType($node)->getConstantStrings();
 
 		return array_map(static fn (Type $type) => $type->getValue(), $strings);
 	}
diff --git a/src/Symfony/DefaultServiceMap.php b/src/Symfony/DefaultServiceMap.php
index edf4dfd6..5d3bccd0 100644
--- a/src/Symfony/DefaultServiceMap.php
+++ b/src/Symfony/DefaultServiceMap.php
@@ -4,7 +4,6 @@
 
 use PhpParser\Node\Expr;
 use PHPStan\Analyser\Scope;
-use PHPStan\Type\TypeUtils;
 use function count;
 
 final class DefaultServiceMap implements ServiceMap
@@ -36,7 +35,7 @@ public function getService(string $id): ?ServiceDefinition
 
 	public static function getServiceIdFromNode(Expr $node, Scope $scope): ?string
 	{
-		$strings = TypeUtils::getConstantStrings($scope->getType($node));
+		$strings = $scope->getType($node)->getConstantStrings();
 		return count($strings) === 1 ? $strings[0]->getValue() : null;
 	}
 
diff --git a/src/Type/Symfony/CommandGetHelperDynamicReturnTypeExtension.php b/src/Type/Symfony/CommandGetHelperDynamicReturnTypeExtension.php
index c59ba0dd..fba70cfd 100644
--- a/src/Type/Symfony/CommandGetHelperDynamicReturnTypeExtension.php
+++ b/src/Type/Symfony/CommandGetHelperDynamicReturnTypeExtension.php
@@ -10,7 +10,6 @@
 use PHPStan\Type\ObjectType;
 use PHPStan\Type\Type;
 use PHPStan\Type\TypeCombinator;
-use PHPStan\Type\TypeUtils;
 use Throwable;
 use function count;
 use function get_class;
@@ -46,7 +45,7 @@ public function getTypeFromMethodCall(MethodReflection $methodReflection, Method
 			return null;
 		}
 
-		$argStrings = TypeUtils::getConstantStrings($scope->getType($methodCall->getArgs()[0]->value));
+		$argStrings = $scope->getType($methodCall->getArgs()[0]->value)->getConstantStrings();
 		if (count($argStrings) !== 1) {
 			return null;
 		}
diff --git a/src/Type/Symfony/Config/ArrayNodeDefinitionPrototypeDynamicReturnTypeExtension.php b/src/Type/Symfony/Config/ArrayNodeDefinitionPrototypeDynamicReturnTypeExtension.php
index 73af2d77..1dae22e2 100644
--- a/src/Type/Symfony/Config/ArrayNodeDefinitionPrototypeDynamicReturnTypeExtension.php
+++ b/src/Type/Symfony/Config/ArrayNodeDefinitionPrototypeDynamicReturnTypeExtension.php
@@ -9,7 +9,6 @@
 use PHPStan\Type\DynamicMethodReturnTypeExtension;
 use PHPStan\Type\Symfony\Config\ValueObject\ParentObjectType;
 use PHPStan\Type\Type;
-use PHPStan\Type\TypeUtils;
 use PHPStan\Type\VerbosityLevel;
 use function count;
 use function in_array;
@@ -66,7 +65,7 @@ public function getTypeFromMethodCall(
 				return $defaultType;
 			}
 
-			$argStrings = TypeUtils::getConstantStrings($scope->getType($methodCall->getArgs()[0]->value));
+			$argStrings = $scope->getType($methodCall->getArgs()[0]->value)->getConstantStrings();
 			if (count($argStrings) === 1 && isset(self::MAPPING[$argStrings[0]->getValue()])) {
 				$type = $argStrings[0]->getValue();
 
diff --git a/src/Type/Symfony/Config/TreeBuilderDynamicReturnTypeExtension.php b/src/Type/Symfony/Config/TreeBuilderDynamicReturnTypeExtension.php
index 8cf3170a..4f266c50 100644
--- a/src/Type/Symfony/Config/TreeBuilderDynamicReturnTypeExtension.php
+++ b/src/Type/Symfony/Config/TreeBuilderDynamicReturnTypeExtension.php
@@ -10,7 +10,6 @@
 use PHPStan\Type\DynamicStaticMethodReturnTypeExtension;
 use PHPStan\Type\Symfony\Config\ValueObject\TreeBuilderType;
 use PHPStan\Type\Type;
-use PHPStan\Type\TypeUtils;
 use function count;
 
 final class TreeBuilderDynamicReturnTypeExtension implements DynamicStaticMethodReturnTypeExtension
@@ -47,7 +46,7 @@ public function getTypeFromStaticMethodCall(MethodReflection $methodReflection,
 		$type = 'array';
 
 		if (isset($methodCall->getArgs()[1])) {
-			$argStrings = TypeUtils::getConstantStrings($scope->getType($methodCall->getArgs()[1]->value));
+			$argStrings = $scope->getType($methodCall->getArgs()[1]->value)->getConstantStrings();
 			if (count($argStrings) === 1 && isset(self::MAPPING[$argStrings[0]->getValue()])) {
 				$type = $argStrings[0]->getValue();
 			}
diff --git a/src/Type/Symfony/InputInterfaceGetArgumentDynamicReturnTypeExtension.php b/src/Type/Symfony/InputInterfaceGetArgumentDynamicReturnTypeExtension.php
index 71e71748..88bd7b0e 100644
--- a/src/Type/Symfony/InputInterfaceGetArgumentDynamicReturnTypeExtension.php
+++ b/src/Type/Symfony/InputInterfaceGetArgumentDynamicReturnTypeExtension.php
@@ -14,7 +14,6 @@
 use PHPStan\Type\StringType;
 use PHPStan\Type\Type;
 use PHPStan\Type\TypeCombinator;
-use PHPStan\Type\TypeUtils;
 use function count;
 use function in_array;
 
@@ -49,7 +48,7 @@ public function getTypeFromMethodCall(MethodReflection $methodReflection, Method
 			return null;
 		}
 
-		$argStrings = TypeUtils::getConstantStrings($scope->getType($methodCall->getArgs()[0]->value));
+		$argStrings = $scope->getType($methodCall->getArgs()[0]->value)->getConstantStrings();
 		if (count($argStrings) !== 1) {
 			return null;
 		}
diff --git a/src/Type/Symfony/InputInterfaceGetOptionDynamicReturnTypeExtension.php b/src/Type/Symfony/InputInterfaceGetOptionDynamicReturnTypeExtension.php
index 223b77cf..6d0346cf 100644
--- a/src/Type/Symfony/InputInterfaceGetOptionDynamicReturnTypeExtension.php
+++ b/src/Type/Symfony/InputInterfaceGetOptionDynamicReturnTypeExtension.php
@@ -10,7 +10,6 @@
 use PHPStan\Type\DynamicMethodReturnTypeExtension;
 use PHPStan\Type\Type;
 use PHPStan\Type\TypeCombinator;
-use PHPStan\Type\TypeUtils;
 use function count;
 
 final class InputInterfaceGetOptionDynamicReturnTypeExtension implements DynamicMethodReturnTypeExtension
@@ -47,7 +46,7 @@ public function getTypeFromMethodCall(MethodReflection $methodReflection, Method
 			return null;
 		}
 
-		$optStrings = TypeUtils::getConstantStrings($scope->getType($methodCall->getArgs()[0]->value));
+		$optStrings = $scope->getType($methodCall->getArgs()[0]->value)->getConstantStrings();
 		if (count($optStrings) !== 1) {
 			return null;
 		}
diff --git a/src/Type/Symfony/InputInterfaceHasArgumentDynamicReturnTypeExtension.php b/src/Type/Symfony/InputInterfaceHasArgumentDynamicReturnTypeExtension.php
index 91611838..34bffcea 100644
--- a/src/Type/Symfony/InputInterfaceHasArgumentDynamicReturnTypeExtension.php
+++ b/src/Type/Symfony/InputInterfaceHasArgumentDynamicReturnTypeExtension.php
@@ -10,7 +10,6 @@
 use PHPStan\Type\Constant\ConstantBooleanType;
 use PHPStan\Type\DynamicMethodReturnTypeExtension;
 use PHPStan\Type\Type;
-use PHPStan\Type\TypeUtils;
 use function array_unique;
 use function count;
 use function in_array;
@@ -46,7 +45,7 @@ public function getTypeFromMethodCall(MethodReflection $methodReflection, Method
 			return null;
 		}
 
-		$argStrings = TypeUtils::getConstantStrings($scope->getType($methodCall->getArgs()[0]->value));
+		$argStrings = $scope->getType($methodCall->getArgs()[0]->value)->getConstantStrings();
 		if (count($argStrings) !== 1) {
 			return null;
 		}
diff --git a/src/Type/Symfony/InputInterfaceHasOptionDynamicReturnTypeExtension.php b/src/Type/Symfony/InputInterfaceHasOptionDynamicReturnTypeExtension.php
index c25e646a..e4f8b5b1 100644
--- a/src/Type/Symfony/InputInterfaceHasOptionDynamicReturnTypeExtension.php
+++ b/src/Type/Symfony/InputInterfaceHasOptionDynamicReturnTypeExtension.php
@@ -10,7 +10,6 @@
 use PHPStan\Type\Constant\ConstantBooleanType;
 use PHPStan\Type\DynamicMethodReturnTypeExtension;
 use PHPStan\Type\Type;
-use PHPStan\Type\TypeUtils;
 use function array_unique;
 use function count;
 
@@ -45,7 +44,7 @@ public function getTypeFromMethodCall(MethodReflection $methodReflection, Method
 			return null;
 		}
 
-		$optStrings = TypeUtils::getConstantStrings($scope->getType($methodCall->getArgs()[0]->value));
+		$optStrings = $scope->getType($methodCall->getArgs()[0]->value)->getConstantStrings();
 		if (count($optStrings) !== 1) {
 			return null;
 		}
diff --git a/src/Type/Symfony/ParameterDynamicReturnTypeExtension.php b/src/Type/Symfony/ParameterDynamicReturnTypeExtension.php
index ad62f127..cd87ff6f 100644
--- a/src/Type/Symfony/ParameterDynamicReturnTypeExtension.php
+++ b/src/Type/Symfony/ParameterDynamicReturnTypeExtension.php
@@ -14,7 +14,6 @@
 use PHPStan\Type\Constant\ConstantArrayType;
 use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
 use PHPStan\Type\Constant\ConstantBooleanType;
-use PHPStan\Type\ConstantType;
 use PHPStan\Type\DynamicMethodReturnTypeExtension;
 use PHPStan\Type\FloatType;
 use PHPStan\Type\GeneralizePrecision;
@@ -194,7 +193,7 @@ private function generalizeType(Type $type): Type
 				}
 				return new ArrayType($this->generalizeType($type->getKeyType()), $this->generalizeType($type->getItemType()));
 			}
-			if ($type instanceof ConstantType) {
+			if ($type->isConstantValue()->yes()) {
 				return $type->generalize(GeneralizePrecision::lessSpecific());
 			}
 			return $traverse($type);