diff --git a/build/PHPStan/Build/OrChainIdenticalComparisonToInArrayRule.php b/build/PHPStan/Build/OrChainIdenticalComparisonToInArrayRule.php
index 01762e05ca..ad6f81e43a 100644
--- a/build/PHPStan/Build/OrChainIdenticalComparisonToInArrayRule.php
+++ b/build/PHPStan/Build/OrChainIdenticalComparisonToInArrayRule.php
@@ -61,7 +61,7 @@ public function processNode(Node $node, Scope $scope): array
 	/**
 	 * @return list<IdentifierRuleError>
 	 */
-	public function processConditionNode(Expr $condNode, Scope $scope): array
+	private function processConditionNode(Expr $condNode, Scope $scope): array
 	{
 		$comparisons = $this->unpackOrChain($condNode);
 		if (count($comparisons) < 2) {
diff --git a/src/Analyser/NodeScopeResolver.php b/src/Analyser/NodeScopeResolver.php
index 012baa57ca..67f40cf608 100644
--- a/src/Analyser/NodeScopeResolver.php
+++ b/src/Analyser/NodeScopeResolver.php
@@ -5089,7 +5089,7 @@ private function processPropertyHooks(
 	/**
 	 * @param FunctionReflection|MethodReflection|null $calleeReflection
 	 */
-	public function resolveClosureThisType(
+	private function resolveClosureThisType(
 		?CallLike $call,
 		$calleeReflection,
 		ParameterReflection $parameter,
@@ -7095,7 +7095,7 @@ private function getNextUnreachableStatements(array $nodes, bool $earlyBinding):
 	/**
 	 * @param array<Expr> $conditions
 	 */
-	public function getFilteringExprForMatchArm(Expr\Match_ $expr, array $conditions): BinaryOp\Identical|FuncCall
+	private function getFilteringExprForMatchArm(Expr\Match_ $expr, array $conditions): BinaryOp\Identical|FuncCall
 	{
 		if (count($conditions) === 1) {
 			return new BinaryOp\Identical($expr->cond, $conditions[0]);
diff --git a/src/Analyser/TypeSpecifier.php b/src/Analyser/TypeSpecifier.php
index ee8069e738..cc7fb05857 100644
--- a/src/Analyser/TypeSpecifier.php
+++ b/src/Analyser/TypeSpecifier.php
@@ -1401,7 +1401,7 @@ private function specifyTypesFromConditionalReturnType(
 	/**
 	 * @param array<string, Expr> $argsMap
 	 */
-	public function getConditionalSpecifiedTypes(
+	private function getConditionalSpecifiedTypes(
 		ConditionalTypeForParameter $conditionalType,
 		Type $leftType,
 		Type $rightType,
diff --git a/src/Parallel/Process.php b/src/Parallel/Process.php
index 36799c274d..94d1dacc67 100644
--- a/src/Parallel/Process.php
+++ b/src/Parallel/Process.php
@@ -17,7 +17,7 @@
 final class Process
 {
 
-	public \React\ChildProcess\Process $process;
+	private \React\ChildProcess\Process $process;
 
 	private ?WritableStreamInterface $in = null;
 
diff --git a/src/Reflection/ResolvedFunctionVariantWithOriginal.php b/src/Reflection/ResolvedFunctionVariantWithOriginal.php
index d7d2f09acc..21108d658e 100644
--- a/src/Reflection/ResolvedFunctionVariantWithOriginal.php
+++ b/src/Reflection/ResolvedFunctionVariantWithOriginal.php
@@ -145,7 +145,7 @@ public function getReturnTypeWithUnresolvableTemplateTypes(): Type
 			);
 	}
 
-	public function getPhpDocReturnTypeWithUnresolvableTemplateTypes(): Type
+	private function getPhpDocReturnTypeWithUnresolvableTemplateTypes(): Type
 	{
 		return $this->phpDocReturnTypeWithUnresolvableTemplateTypes ??=
 			$this->resolveConditionalTypesForParameter(
diff --git a/src/Rules/Comparison/ConstantConditionRuleHelper.php b/src/Rules/Comparison/ConstantConditionRuleHelper.php
index 7fc6692103..5717d43b63 100644
--- a/src/Rules/Comparison/ConstantConditionRuleHelper.php
+++ b/src/Rules/Comparison/ConstantConditionRuleHelper.php
@@ -22,7 +22,7 @@ public function __construct(
 	{
 	}
 
-	public function shouldSkip(Scope $scope, Expr $expr): bool
+	private function shouldSkip(Scope $scope, Expr $expr): bool
 	{
 		if (
 			$expr instanceof Expr\BinaryOp\Equal
diff --git a/src/Rules/Methods/MethodParameterComparisonHelper.php b/src/Rules/Methods/MethodParameterComparisonHelper.php
index a52dbe86f5..0e14ef528b 100644
--- a/src/Rules/Methods/MethodParameterComparisonHelper.php
+++ b/src/Rules/Methods/MethodParameterComparisonHelper.php
@@ -362,7 +362,7 @@ public function compare(ExtendedMethodReflection $prototype, ClassReflection $pr
 		return $messages;
 	}
 
-	public function isParameterTypeCompatible(Type $methodParameterType, Type $prototypeParameterType, bool $supportsContravariance): bool
+	private function isParameterTypeCompatible(Type $methodParameterType, Type $prototypeParameterType, bool $supportsContravariance): bool
 	{
 		return $this->isTypeCompatible($methodParameterType, $prototypeParameterType, $supportsContravariance, false);
 	}
diff --git a/src/Type/OperatorTypeSpecifyingExtensionRegistry.php b/src/Type/OperatorTypeSpecifyingExtensionRegistry.php
index 11f65849b7..724956062a 100644
--- a/src/Type/OperatorTypeSpecifyingExtensionRegistry.php
+++ b/src/Type/OperatorTypeSpecifyingExtensionRegistry.php
@@ -22,7 +22,7 @@ public function __construct(
 	/**
 	 * @return OperatorTypeSpecifyingExtension[]
 	 */
-	public function getOperatorTypeSpecifyingExtensions(string $operator, Type $leftType, Type $rightType): array
+	private function getOperatorTypeSpecifyingExtensions(string $operator, Type $leftType, Type $rightType): array
 	{
 		return array_values(array_filter($this->extensions, static fn (OperatorTypeSpecifyingExtension $extension): bool => $extension->isOperatorSupported($operator, $leftType, $rightType)));
 	}
diff --git a/src/Type/Php/DateFunctionReturnTypeHelper.php b/src/Type/Php/DateFunctionReturnTypeHelper.php
index bac485292b..3126efe41b 100644
--- a/src/Type/Php/DateFunctionReturnTypeHelper.php
+++ b/src/Type/Php/DateFunctionReturnTypeHelper.php
@@ -46,7 +46,7 @@ public function getTypeFromFormatType(Type $formatType, bool $useMicrosec): Type
 		return $type;
 	}
 
-	public function buildReturnTypeFromFormat(string $formatString, bool $useMicrosec): Type
+	private function buildReturnTypeFromFormat(string $formatString, bool $useMicrosec): Type
 	{
 		// see see https://www.php.net/manual/en/datetime.format.php
 		switch ($formatString) {
diff --git a/src/Type/Php/FilterFunctionReturnTypeHelper.php b/src/Type/Php/FilterFunctionReturnTypeHelper.php
index cb2e93acdf..ca242a964e 100644
--- a/src/Type/Php/FilterFunctionReturnTypeHelper.php
+++ b/src/Type/Php/FilterFunctionReturnTypeHelper.php
@@ -54,7 +54,7 @@ public function __construct(private ReflectionProvider $reflectionProvider, priv
 		$this->flagsString = new ConstantStringType('flags');
 	}
 
-	public function getOffsetValueType(Type $inputType, Type $offsetType, ?Type $filterType, ?Type $flagsType): Type
+	private function getOffsetValueType(Type $inputType, Type $offsetType, ?Type $filterType, ?Type $flagsType): Type
 	{
 		$inexistentOffsetType = $this->hasFlag('FILTER_NULL_ON_FAILURE', $flagsType)
 			? new ConstantBooleanType(false)
diff --git a/src/Type/Php/FilterVarArrayDynamicReturnTypeExtension.php b/src/Type/Php/FilterVarArrayDynamicReturnTypeExtension.php
index d92e4e5882..77da1d1096 100644
--- a/src/Type/Php/FilterVarArrayDynamicReturnTypeExtension.php
+++ b/src/Type/Php/FilterVarArrayDynamicReturnTypeExtension.php
@@ -176,7 +176,7 @@ public function getTypeFromFunctionCall(FunctionReflection $functionReflection,
 	}
 
 	/** @return array{?Type, ?Type} */
-	public function fetchFilter(Type $type): array
+	private function fetchFilter(Type $type): array
 	{
 		if (!$type->isArray()->yes()) {
 			return [$type, null];
diff --git a/src/Type/Php/IdateFunctionReturnTypeHelper.php b/src/Type/Php/IdateFunctionReturnTypeHelper.php
index c9c0f90c6e..752fba17b9 100644
--- a/src/Type/Php/IdateFunctionReturnTypeHelper.php
+++ b/src/Type/Php/IdateFunctionReturnTypeHelper.php
@@ -27,7 +27,7 @@ public function getTypeFromFormatType(Type $formatType): ?Type
 		return TypeCombinator::union(...$types);
 	}
 
-	public function buildReturnTypeFromFormat(string $formatString): Type
+	private function buildReturnTypeFromFormat(string $formatString): Type
 	{
 		// see https://www.php.net/idate and https://www.php.net/manual/de/datetime.format
 		switch ($formatString) {
diff --git a/src/Type/Regex/RegexNonCapturingGroup.php b/src/Type/Regex/RegexNonCapturingGroup.php
index 79b4d8bc08..7c55800ee5 100644
--- a/src/Type/Regex/RegexNonCapturingGroup.php
+++ b/src/Type/Regex/RegexNonCapturingGroup.php
@@ -15,7 +15,7 @@ public function __construct(
 	}
 
 	/** @phpstan-assert-if-true !null $this->getAlternationId() */
-	public function inAlternation(): bool
+	private function inAlternation(): bool
 	{
 		return $this->alternation !== null;
 	}