diff --git a/rules/CodeQuality/Rector/Switch_/SingularSwitchToIfRector.php b/rules/CodeQuality/Rector/Switch_/SingularSwitchToIfRector.php
index 161ef81fe41..f8835ebb0c2 100644
--- a/rules/CodeQuality/Rector/Switch_/SingularSwitchToIfRector.php
+++ b/rules/CodeQuality/Rector/Switch_/SingularSwitchToIfRector.php
@@ -81,8 +81,8 @@ CODE_SAMPLE
         // only default → basically unwrap
         if (!$onlyCase->cond instanceof Expr) {
             // remove default clause because it cause syntax error
-            return \array_filter($onlyCase->stmts, function (Stmt $statement) {
-                return !$statement instanceof Break_;
+            return \array_filter($onlyCase->stmts, static function (Stmt $stmt) : bool {
+                return !$stmt instanceof Break_;
             });
         }
         $if = new If_(new Identical($node->cond, $onlyCase->cond));
diff --git a/src/Application/VersionResolver.php b/src/Application/VersionResolver.php
index 37ca5407bd5..3b690912f55 100644
--- a/src/Application/VersionResolver.php
+++ b/src/Application/VersionResolver.php
@@ -19,12 +19,12 @@ final class VersionResolver
      * @api
      * @var string
      */
-    public const PACKAGE_VERSION = 'ac072bc8af186b2c86256aa7d29e52bb608ece27';
+    public const PACKAGE_VERSION = '2ec55701f292770fc7be3ca6e434d437e59c333b';
     /**
      * @api
      * @var string
      */
-    public const RELEASE_DATE = '2024-01-12 00:00:19';
+    public const RELEASE_DATE = '2024-01-13 08:42:30';
     /**
      * @var int
      */
diff --git a/src/Skipper/SkipCriteriaResolver/SkippedClassResolver.php b/src/Skipper/SkipCriteriaResolver/SkippedClassResolver.php
index fd91bbd83c0..ffd07455c88 100644
--- a/src/Skipper/SkipCriteriaResolver/SkippedClassResolver.php
+++ b/src/Skipper/SkipCriteriaResolver/SkippedClassResolver.php
@@ -9,23 +9,25 @@ use Rector\Testing\PHPUnit\StaticPHPUnitEnvironment;
 final class SkippedClassResolver
 {
     /**
-     * @var array<string, string[]|null>
+     * @var null|array<string, string[]|null>
      */
-    private $skippedClasses = [];
+    private $skippedClasses = null;
     /**
      * @return array<string, string[]|null>
      */
     public function resolve() : array
     {
+        // disable cache in tests
         if (StaticPHPUnitEnvironment::isPHPUnitRun()) {
             // disable cache in tests
-            $this->skippedClasses = [];
+            $this->skippedClasses = null;
         }
-        // skip cache in tests
-        if ($this->skippedClasses !== []) {
+        // already cached, even only empty array
+        if ($this->skippedClasses !== null) {
             return $this->skippedClasses;
         }
         $skip = SimpleParameterProvider::provideArrayParameter(Option::SKIP);
+        $this->skippedClasses = [];
         foreach ($skip as $key => $value) {
             // e.g. [SomeClass::class] → shift values to [SomeClass::class => null]
             if (\is_int($key)) {
diff --git a/src/Skipper/SkipCriteriaResolver/SkippedPathsResolver.php b/src/Skipper/SkipCriteriaResolver/SkippedPathsResolver.php
index 1f587ea856d..1b6327d155b 100644
--- a/src/Skipper/SkipCriteriaResolver/SkippedPathsResolver.php
+++ b/src/Skipper/SkipCriteriaResolver/SkippedPathsResolver.php
@@ -34,7 +34,7 @@ final class SkippedPathsResolver
         if (StaticPHPUnitEnvironment::isPHPUnitRun()) {
             $this->skippedPaths = null;
         }
-        // already filled, even empty array
+        // already cached, even only empty array
         if ($this->skippedPaths !== null) {
             return $this->skippedPaths;
         }