diff --git a/Ai/Ocr/BasicOcr.php b/Ai/Ocr/BasicOcr.php
index a94cb0efb..740c42ed4 100644
--- a/Ai/Ocr/BasicOcr.php
+++ b/Ai/Ocr/BasicOcr.php
@@ -90,41 +90,41 @@ final class BasicOcr
             throw new PathException($path); // @codeCoverageIgnore
         }
 
-        $read = \fread($fp, 4);
-        if ($read === false) {
-            return []; // @codeCoverageIgnore
-        }
-        $magicNumber = \unpack('N', $read)[1];
 
-        $read = \fread($fp, 4);
-        if ($read === false) {
+        if (($read = \fread($fp, 4)) === false || ($unpack = \unpack('N', $read)) === false) {
             return []; // @codeCoverageIgnore
         }
-        $numberOfImages = \unpack('N', $read)[1];
+        $magicNumber = $unpack[1];
+
+        if (($read = \fread($fp, 4)) === false || ($unpack = \unpack('N', $read)) === false) {
+            return []; // @codeCoverageIgnore
+        }
+        $numberOfImages = $unpack[1];
 
         if ($limit > 0) {
             $numberOfImages = \min($numberOfImages, $limit);
         }
 
-        $read = \fread($fp, 4);
-        if ($read === false) {
-            return []; // @codeCoverageIgnore
-        }
-        $numberOfRows = \unpack('N', $read)[1];
 
-        $read = \fread($fp, 4);
-        if ($read === false) {
+        if (($read = \fread($fp, 4)) === false || ($unpack = \unpack('N', $read)) === false) {
             return []; // @codeCoverageIgnore
         }
-        $numberOfColumns = \unpack('N', $read)[1];
+        $numberOfRows = $unpack[1];
+
+        if (($read = \fread($fp, 4)) === false || ($unpack = \unpack('N', $read)) === false) {
+            return []; // @codeCoverageIgnore
+        }
+        $numberOfColumns = $unpack[1];
 
         $images = [];
         for ($i = 0; $i < $numberOfImages; ++$i) {
-            $read = \fread($fp, $numberOfRows * $numberOfColumns);
-            if ($read === false) {
+
+            if (($read = \fread($fp, $numberOfRows * $numberOfColumns)) === false
+                || ($unpack = \unpack('C*', $read)) === false
+            ) {
                 return []; // @codeCoverageIgnore
             }
-            $images[] = \array_values(\unpack('C*', $read));
+            $images[] = \array_values($unpack);
         }
 
         \fclose($fp);
@@ -153,17 +153,16 @@ final class BasicOcr
             throw new PathException($path); // @codeCoverageIgnore
         }
 
-        $read = \fread($fp, 4);
-        if ($read === false) {
-            return []; // @codeCoverageIgnore
-        }
-        $magicNumber = \unpack('N', $read)[1];
 
-        $read = \fread($fp, 4);
-        if ($read === false) {
+        if (($read = \fread($fp, 4)) === false || ($unpack = \unpack('N', $read)) === false) {
             return []; // @codeCoverageIgnore
         }
-        $numberOfLabels = \unpack('N', $read)[1];
+        $magicNumber = $unpack[1];
+
+        if (($read = \fread($fp, 4)) === false || ($unpack = \unpack('N', $read)) === false) {
+            return []; // @codeCoverageIgnore
+        }
+        $numberOfLabels = $unpack[1];
 
         if ($limit > 0) {
             $numberOfLabels = \min($numberOfLabels, $limit);
@@ -171,11 +170,11 @@ final class BasicOcr
 
         $labels = [];
         for ($i = 0; $i < $numberOfLabels; ++$i) {
-            $read = \fread($fp, 1);
-            if ($read === false) {
+
+            if (($read = \fread($fp, 1)) === false || ($unpack = \unpack('C', $read)) === false) {
                 return []; // @codeCoverageIgnore
             }
-            $labels[] = \unpack('C', $read)[1];
+            $labels[] = $unpack[1];
         }
 
         \fclose($fp);
diff --git a/DataStorage/Database/DataMapperAbstract.php b/DataStorage/Database/DataMapperAbstract.php
index 5c41d256d..2d0c118a3 100644
--- a/DataStorage/Database/DataMapperAbstract.php
+++ b/DataStorage/Database/DataMapperAbstract.php
@@ -340,7 +340,7 @@ class DataMapperAbstract implements DataMapperInterface
      *
      * @since 1.0.0
      */
-    public static function withConditional(string $id, mixed $value, array $models = [], string $comparison = '=') /** @todo: return : static */
+    public static function withConditional(string $id, mixed $value, array $models = [], string $comparison = '=') : static
     {
         self::$conditionals[$id] = [
             'value'      => $value,
@@ -348,6 +348,7 @@ class DataMapperAbstract implements DataMapperInterface
             'comparison' => $comparison,
         ];
 
+        /** @var static */
         return static::class;
     }
 
@@ -594,7 +595,10 @@ class DataMapperAbstract implements DataMapperInterface
         }
 
         try {
-            self::$db->con->prepare($query->toSql())->execute();
+            $sth = self::$db->con->prepare($query->toSql());
+            if ($sth !== false) {
+                $sth->execute();
+            }
         } catch (\Throwable $t) {
             \var_dump($t->getMessage());
             \var_dump($query->toSql());
@@ -655,7 +659,10 @@ class DataMapperAbstract implements DataMapperInterface
             $query->insert(static::$primaryField)->value(0);
         }
 
-        self::$db->con->prepare($query->toSql())->execute();
+        $sth = self::$db->con->prepare($query->toSql());
+        if ($sth !== false) {
+            $sth->execute();
+        }
 
         return self::$db->con->lastInsertId();
     }
@@ -1064,7 +1071,10 @@ class DataMapperAbstract implements DataMapperInterface
         }
 
         try {
-            self::$db->con->prepare($relQuery->toSql())->execute();
+            $sth = self::$db->con->prepare($relQuery->toSql());
+            if ($sth !== false) {
+                $sth->execute();
+            }
         } catch (\Throwable $e) {
             \var_dump($e->getMessage());
             \var_dump($relQuery->toSql());
@@ -1322,7 +1332,10 @@ class DataMapperAbstract implements DataMapperInterface
                 ->where(static::$hasMany[$propertyName]['table'] . '.' . static::$hasMany[$propertyName]['external'], '=', $src)
                 ->where(static::$hasMany[$propertyName]['table'] . '.' . static::$hasMany[$propertyName]['self'], '=', $objId, 'and');
 
-            self::$db->con->prepare($relQuery->toSql())->execute();
+            $sth = self::$db->con->prepare($relQuery->toSql());
+            if ($sth !== false) {
+                $sth->execute();
+            }
         }
     }
 
@@ -1494,7 +1507,10 @@ class DataMapperAbstract implements DataMapperInterface
             }
         }
 
-        self::$db->con->prepare($query->toSql())->execute();
+        $sth = self::$db->con->prepare($query->toSql());
+        if ($sth !== false) {
+            $sth->execute();
+        }
     }
 
     /**
@@ -1558,7 +1574,10 @@ class DataMapperAbstract implements DataMapperInterface
             }
         }
 
-        self::$db->con->prepare($query->toSql())->execute();
+        $sth = self::$db->con->prepare($query->toSql());
+        if ($sth !== false) {
+            $sth->execute();
+        }
     }
 
     /**
@@ -1834,7 +1853,10 @@ class DataMapperAbstract implements DataMapperInterface
             }
         }
 
-        self::$db->con->prepare($query->toSql())->execute();
+        $sth = self::$db->con->prepare($query->toSql());
+        if ($sth !== false) {
+            $sth->execute();
+        }
     }
 
     /**
@@ -3045,9 +3067,13 @@ class DataMapperAbstract implements DataMapperInterface
         }
 
         try {
+            $results = false;
+
             $sth = self::$db->con->prepare($query->toSql());
-            $sth->execute();
-            $results = $sth->fetchAll(\PDO::FETCH_ASSOC);
+            if ($sth !== false) {
+                $sth->execute();
+                $results = $sth->fetchAll(\PDO::FETCH_ASSOC);
+            }
         } catch (\Throwable $t) {
             $results = false;
             \var_dump($query->toSql());
@@ -3074,10 +3100,13 @@ class DataMapperAbstract implements DataMapperInterface
             ->from(static::$hasMany[$ref]['table'])
             ->where(static::$hasMany[$ref]['table'] . '.' . static::$hasMany[$ref]['external'], '=', $refKey);
 
-        $sth = self::$db->con->prepare($query->toSql());
-        $sth->execute();
+        $result = false;
 
-        $result = $sth->fetchAll(\PDO::FETCH_NUM);
+        $sth = self::$db->con->prepare($query->toSql());
+        if ($sth !== false) {
+            $sth->execute();
+            $result = $sth->fetchAll(\PDO::FETCH_NUM);
+        }
 
         return $result === false ? [] : \array_column($result, 0);
     }
@@ -3128,9 +3157,10 @@ class DataMapperAbstract implements DataMapperInterface
                 }
 
                 $sth = self::$db->con->prepare($query->toSql());
-                $sth->execute();
-
-                $cachedTables[$value['table']] = $sth->fetchAll(\PDO::FETCH_COLUMN);
+                if ($sth !== false) {
+                    $sth->execute();
+                    $cachedTables[$value['table']] = $sth->fetchAll(\PDO::FETCH_COLUMN);
+                }
             }
 
             $result[$member] = $cachedTables[$value['table']];
diff --git a/Math/Matrix/Matrix.php b/Math/Matrix/Matrix.php
index cd9120526..0c774985f 100644
--- a/Math/Matrix/Matrix.php
+++ b/Math/Matrix/Matrix.php
@@ -686,7 +686,9 @@ class Matrix implements \ArrayAccess, \Iterator
      */
     public function current() : int
     {
-        return $this->offsetGet($this->position);
+        $row = (int) ($this->position / $this->m);
+
+        return $this->matrix[$row][$this->position - $row * $this->n];
     }
 
     /**
diff --git a/Math/Number/Prime.php b/Math/Number/Prime.php
index 0f185aab1..887e43ff0 100644
--- a/Math/Number/Prime.php
+++ b/Math/Number/Prime.php
@@ -101,7 +101,7 @@ final class Prime
             }
 
             for ($j = 1; $j < $s; ++$j) {
-                if ($x === null) {
+                if ($x === null || $x === false) {
                     return false;
                 }
 
diff --git a/Math/Parser/Evaluator.php b/Math/Parser/Evaluator.php
index bd18c2ccd..622b03635 100644
--- a/Math/Parser/Evaluator.php
+++ b/Math/Parser/Evaluator.php
@@ -37,7 +37,9 @@ final class Evaluator
      */
     public static function evaluate(string $equation) : ?float
     {
-        if (\substr_count($equation, '(') !== \substr_count($equation, ')') || \preg_match('#[^0-9\+\-\*\/\(\)\ \^\.]#', $equation)) {
+        if (\substr_count($equation, '(') !== \substr_count($equation, ')')
+            || \preg_match('#[^0-9\+\-\*\/\(\)\ \^\.]#', $equation)
+        ) {
             return null;
         }
 
@@ -48,8 +50,8 @@ final class Evaluator
             if (\is_numeric($value)) {
                 $stack[] = $value;
             } else {
-                $a = self::parseValue(\array_pop($stack));
-                $b = self::parseValue(\array_pop($stack));
+                $a = self::parseValue(\array_pop($stack) ?? 0);
+                $b = self::parseValue(\array_pop($stack) ?? 0);
 
                 if ($value === '+') {
                     $stack[] = $a + $b;
diff --git a/Router/SocketRouter.php b/Router/SocketRouter.php
index 5619323eb..3d07eec8a 100644
--- a/Router/SocketRouter.php
+++ b/Router/SocketRouter.php
@@ -127,7 +127,7 @@ final class SocketRouter implements RouterInterface
                 // if permission check is invalid
                 if ((isset($d['permission']) && $account === null)
                     || (isset($d['permission'])
-                        && !$account->hasPermission(
+                        && !$account?->hasPermission(
                             $d['permission']['type'] ?? null, $orgId, $app, $d['permission']['module'] ?? null, $d['permission']['state'] ?? null
                         )
                     )
diff --git a/Router/WebRouter.php b/Router/WebRouter.php
index 990ef1134..bdbdbbc5f 100644
--- a/Router/WebRouter.php
+++ b/Router/WebRouter.php
@@ -149,7 +149,7 @@ final class WebRouter implements RouterInterface
                     // if permission check is invalid
                     if ((isset($d['permission']) && $account === null)
                         || (isset($d['permission'])
-                            && !$account->hasPermission(
+                            && !$account?->hasPermission(
                                 $d['permission']['type'] ?? 0, $d['permission']['unit'] ?? $orgId, $app, $d['permission']['module'] ?? null, $d['permission']['state'] ?? null
                             )
                         )
diff --git a/Stdlib/Base/Enum.php b/Stdlib/Base/Enum.php
index caac22bda..960d4c8a5 100644
--- a/Stdlib/Base/Enum.php
+++ b/Stdlib/Base/Enum.php
@@ -55,7 +55,7 @@ abstract class Enum
     {
         $reflect = new \ReflectionClass(\get_called_class());
 
-        return $reflect->getConstants();
+        return $reflect->getConstants() ?? [];
     }
 
     /**
diff --git a/Stdlib/Graph/Graph.php b/Stdlib/Graph/Graph.php
index 2af08dd11..e4efd26d7 100644
--- a/Stdlib/Graph/Graph.php
+++ b/Stdlib/Graph/Graph.php
@@ -354,7 +354,12 @@ class Graph
                 $graph->setNode($node2);
             }
 
-            $node1->setNodeRelative($node2)->setWeight($this->getEdge($node1->getId(), $node2->getId())->getWeight());
+            $node1->setNodeRelative($node2)
+                ->setWeight($this->getEdge(
+                        $node1->getId(),
+                        $node2->getId()
+                    )->getWeight()
+                );
         }
 
         return $graph;
@@ -543,14 +548,14 @@ class Graph
     /**
      * Get longest path between two nodes.
      *
-     * @param int|string $node1 Graph node
-     * @param int|string $node2 Graph node
+     * @param int|string|Node $node1 Graph node
+     * @param int|string|Node $node2 Graph node
      *
      * @return Node[]
      *
      * @since 1.0.0
      */
-    public function longestPathBetweenNodes(int|string $node1, int|string $node2) : array
+    public function longestPathBetweenNodes(int|string|Node $node1, int|string|Node $node2) : array
     {
         if (!($node1 instanceof Node)) {
             $node1 = $this->getNode($node1);
diff --git a/Stdlib/Map/MultiMap.php b/Stdlib/Map/MultiMap.php
index cff78c58b..ec5ef5841 100644
--- a/Stdlib/Map/MultiMap.php
+++ b/Stdlib/Map/MultiMap.php
@@ -184,11 +184,11 @@ final class MultiMap implements \Countable
      */
     public function get(int|string|array $key) : mixed
     {
-        if ($this->keyType === KeyType::SINGLE) {
-            return $this->getSingle($key);
-        } else {
+        if ($this->keyType === KeyType::MULTIPLE || \is_array($key)) {
             return $this->getMultiple($key);
         }
+
+        return $this->getSingle($key);
     }
 
     /**
@@ -233,7 +233,9 @@ final class MultiMap implements \Countable
             }
         }
 
-        return isset($this->keys[$key]) ? $this->values[$this->keys[$key]] ?? null : null;
+        return !\is_array($key) && isset($this->keys[$key])
+            ? $this->values[$this->keys[$key]] ?? null
+            : null;
     }
 
     /**
@@ -248,7 +250,7 @@ final class MultiMap implements \Countable
      */
     public function set(int|string|array $key, mixed $value) : bool
     {
-        if ($this->keyType === KeyType::MULTIPLE && \is_array($key)) {
+        if ($this->keyType === KeyType::MULTIPLE || \is_array($key)) {
             return $this->setMultiple($key, $value);
         }
 
@@ -267,6 +269,8 @@ final class MultiMap implements \Countable
      */
     private function setMultiple(int|string|array $key, mixed $value) : bool
     {
+        $key = \is_array($key) ? $key : [$key];
+
         if ($this->orderType !== OrderType::STRICT) {
             /** @var array<string[]> $permutation */
             $permutation = Permutation::permut($key, [], false);
@@ -315,7 +319,7 @@ final class MultiMap implements \Countable
      */
     public function remove(int|string|array $key) : bool
     {
-        if ($this->keyType === KeyType::MULTIPLE && \is_array($key)) {
+        if ($this->keyType === KeyType::MULTIPLE || \is_array($key)) {
             return $this->removeMultiple($key);
         }
 
@@ -333,6 +337,8 @@ final class MultiMap implements \Countable
      */
     private function removeMultiple(int|string|array $key) : bool
     {
+        $key = \is_array($key) ? $key : [$key];
+
         if ($this->orderType !== OrderType::LOOSE) {
             return $this->remove(\implode(':', $key));
         }
@@ -381,14 +387,14 @@ final class MultiMap implements \Countable
      *
      * Both keys need to exist in the multimap.
      *
-     * @param int|string|array $old Old key
-     * @param int|string|array $new New key
+     * @param int|string $old Old key
+     * @param int|string $new New key
      *
      * @return bool
      *
      * @since 1.0.0
      */
-    public function remap(int|string|array $old, int|string|array $new) : bool
+    public function remap(int|string $old, int|string $new) : bool
     {
         if ($this->keyType === KeyType::MULTIPLE) {
             return false;
@@ -410,13 +416,13 @@ final class MultiMap implements \Countable
      *
      * This only removes the value if no other key exists for this value.
      *
-     * @param int|string|array $key Key used to identify value
+     * @param int|string $key Key used to identify value
      *
      * @return bool
      *
      * @since 1.0.0
      */
-    public function removeKey(int|string|array $key) : bool
+    public function removeKey(int|string $key) : bool
     {
         if ($this->keyType === KeyType::MULTIPLE) {
             return false;
@@ -460,7 +466,7 @@ final class MultiMap implements \Countable
      */
     public function getSiblings(int|string|array $key) : array
     {
-        if ($this->keyType === KeyType::MULTIPLE) {
+        if ($this->keyType === KeyType::MULTIPLE || \is_array($key)) {
             return $this->getSiblingsMultiple($key);
         }
 
diff --git a/System/File/Ftp/Directory.php b/System/File/Ftp/Directory.php
index ccea449e4..09a7dbc05 100644
--- a/System/File/Ftp/Directory.php
+++ b/System/File/Ftp/Directory.php
@@ -673,15 +673,14 @@ class Directory extends FileAbstract implements DirectoryInterface
     /**
      * {@inheritdoc}
      */
-    public function current() : FileAbstract
+    public function current() : ContainerInterface
     {
         $current = \current($this->nodes);
-
-        if (isset($current) && $current instanceof self) {
+        if ($current instanceof self) {
             $current->index();
         }
 
-        return $current;
+        return $current === false ? $this : $current;
     }
 
     /**
@@ -698,12 +697,9 @@ class Directory extends FileAbstract implements DirectoryInterface
     public function next()
     {
         $next = \next($this->nodes);
-
-        if (isset($next) && $next instanceof self) {
+        if ($next instanceof self) {
             $next->index();
         }
-
-        return $next;
     }
 
     /**
diff --git a/System/File/Local/Directory.php b/System/File/Local/Directory.php
index d6cfa5323..b598d3871 100644
--- a/System/File/Local/Directory.php
+++ b/System/File/Local/Directory.php
@@ -496,15 +496,14 @@ final class Directory extends FileAbstract implements DirectoryInterface
     /**
      * {@inheritdoc}
      */
-    public function current() : FileAbstract
+    public function current() : ContainerInterface
     {
         $current = \current($this->nodes);
-
-        if (isset($current) && $current instanceof self) {
+        if ($current instanceof self) {
             $current->index();
         }
 
-        return $current;
+        return $current === false ? $this : $current;
     }
 
     /**
@@ -521,12 +520,9 @@ final class Directory extends FileAbstract implements DirectoryInterface
     public function next()
     {
         $next = \next($this->nodes);
-
-        if (isset($next) && $next instanceof self) {
+        if ($next instanceof self) {
             $next->index();
         }
-
-        return $next;
     }
 
     /**
diff --git a/System/SystemUtils.php b/System/SystemUtils.php
index 6392b32be..4eb487be7 100644
--- a/System/SystemUtils.php
+++ b/System/SystemUtils.php
@@ -85,7 +85,7 @@ final class SystemUtils
         if (\stristr(\PHP_OS, 'LINUX')) {
             $free = \shell_exec('free');
 
-            if ($free === null) {
+            if ($free === null || $free === false) {
                 return $memUsage; // @codeCoverageIgnore
             }
 
@@ -115,7 +115,13 @@ final class SystemUtils
             \exec('wmic cpu get LoadPercentage', $cpuUsage);
             $cpuUsage = $cpuUsage[1];
         } elseif (\stristr(\PHP_OS, 'LINUX') !== false) {
-            $cpuUsage = \sys_getloadavg()[0] * 100 / \exec('nproc');
+            $loadavg  = \sys_getloadavg();
+
+            if ($loadavg === false) {
+                return -1;
+            }
+
+            $cpuUsage = $loadavg[0] * 100 / \exec('nproc');
         }
 
         return (int) $cpuUsage;
diff --git a/Utils/Barcode/C128Abstract.php b/Utils/Barcode/C128Abstract.php
index 1df9f30f1..39169ec94 100644
--- a/Utils/Barcode/C128Abstract.php
+++ b/Utils/Barcode/C128Abstract.php
@@ -334,6 +334,11 @@ abstract class C128Abstract
         $white    = \imagecolorallocate($image, 255, 255, 255);
         $location = 0;
         $length   = \strlen($codeString);
+
+        if ($white === false || $black === false) {
+            throw new \Exception(); // @codeCoverageIgnore
+        }
+
         \imagefill($image, 0, 0, $white);
 
         for ($position = 1; $position <= $length; ++$position) {
diff --git a/Utils/Encoding/Huffman/Huffman.php b/Utils/Encoding/Huffman/Huffman.php
index 28cef0b52..c81b04111 100644
--- a/Utils/Encoding/Huffman/Huffman.php
+++ b/Utils/Encoding/Huffman/Huffman.php
@@ -94,7 +94,7 @@ final class Huffman
                 $c .= '0';
             }
 
-            $binary .= \chr(\bindec($c));
+            $binary .= \chr((int) \bindec($c));
         }
 
         return $binary;
diff --git a/Utils/Git/Repository.php b/Utils/Git/Repository.php
index 257446b9c..0c89aaf87 100644
--- a/Utils/Git/Repository.php
+++ b/Utils/Git/Repository.php
@@ -129,6 +129,11 @@ class Repository
     {
         $branches = $this->getBranches();
         $active   = \preg_grep('/^\*/', $branches);
+
+        if (!\is_array($active)) {
+            return new Branch();
+        }
+
         \reset($active);
 
         return new Branch(\current($active));
diff --git a/Utils/IO/Zip/Gz.php b/Utils/IO/Zip/Gz.php
index d36ff6e12..1f0e39de0 100644
--- a/Utils/IO/Zip/Gz.php
+++ b/Utils/IO/Zip/Gz.php
@@ -32,7 +32,11 @@ class Gz implements ArchiveInterface
     public static function pack(string|array $source, string $destination, bool $overwrite = false) : bool
     {
         $destination = \str_replace('\\', '/', $destination);
-        if (!$overwrite && \is_file($destination) || !\is_file($source)) {
+        if ($destination === false
+            || \is_array($source)
+            || (!$overwrite && \is_file($destination))
+            || !\is_file($source)
+        ) {
             return false;
         }
 
@@ -68,8 +72,8 @@ class Gz implements ArchiveInterface
             return false; // @codeCoverageIgnore
         }
 
-        while (!\gzeof($gz)) {
-            \fwrite($dest, \gzread($gz, 4096));
+        while (!\gzeof($gz) && ($read = \gzread($gz, 4096)) !== false) {
+            \fwrite($dest, $read);
         }
 
         \fclose($dest);
diff --git a/Utils/IO/Zip/Tar.php b/Utils/IO/Zip/Tar.php
index bce5973e9..b8c5d2c37 100644
--- a/Utils/IO/Zip/Tar.php
+++ b/Utils/IO/Zip/Tar.php
@@ -34,11 +34,14 @@ class Tar implements ArchiveInterface
     public static function pack(string|array $sources, string $destination, bool $overwrite = false) : bool
     {
         $destination = FileUtils::absolute(\str_replace('\\', '/', $destination));
-
         if (!$overwrite && \is_file($destination)) {
             return false;
         }
 
+        if (\is_string($sources)) {
+            $sources = [$sources];
+        }
+
         $tar = new \PharData($destination);
 
         /**
diff --git a/Utils/IO/Zip/Zip.php b/Utils/IO/Zip/Zip.php
index c6a82bed5..2319c45d5 100644
--- a/Utils/IO/Zip/Zip.php
+++ b/Utils/IO/Zip/Zip.php
@@ -34,7 +34,6 @@ class Zip implements ArchiveInterface
     public static function pack(string|array $sources, string $destination, bool $overwrite = false) : bool
     {
         $destination = FileUtils::absolute(\str_replace('\\', '/', $destination));
-
         if (!$overwrite && \is_file($destination)
             || \is_dir($destination)
         ) {
@@ -46,6 +45,10 @@ class Zip implements ArchiveInterface
             return false;
         }
 
+        if (\is_string($sources)) {
+            $sources = [$sources];
+        }
+
         /**
          * @var string $relative
          */
diff --git a/Utils/StringUtils.php b/Utils/StringUtils.php
index d1878bdf1..9f2647da6 100644
--- a/Utils/StringUtils.php
+++ b/Utils/StringUtils.php
@@ -169,10 +169,13 @@ final class StringUtils
      */
     public static function entropy(string $value) : float
     {
-        $entropy    = 0.0;
-        $size       = \strlen($value);
+        $entropy = 0.0;
+        $size    = \strlen($value);
+
+        /** @var array $countChars */
         $countChars = \count_chars($value, 1);
 
+        /** @var int $v */
         foreach ($countChars as $v) {
             $p        = $v / $size;
             $entropy -= $p * \log($p) / \log(2);
diff --git a/composer.json b/composer.json
index 219d7edc5..1fdf69d84 100644
--- a/composer.json
+++ b/composer.json
@@ -8,11 +8,11 @@
         }
     ],
     "require-dev": {
-        "phpunit/phpunit": "^9.4",
-        "squizlabs/php_codesniffer": "^3.5",
-        "phpmd/phpmd": "^2.9",
-        "phpstan/phpstan": "^0.12.58",
-        "phan/phan": "^3.2.6"
+        "phpunit/phpunit": ">=9.4",
+        "squizlabs/php_codesniffer": ">=3.5",
+        "phpmd/phpmd": ">=2.9",
+        "phpstan/phpstan": ">=0.12.58",
+        "phan/phan": ">=3.2.6"
     },
     "minimum-stability": "dev",
     "prefer-stable": true
diff --git a/composer.lock b/composer.lock
index 0cd83bbd7..d1ec6a8fb 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": "22715ac88b295c37cc59c478717fddc1",
+    "content-hash": "48ce3426afe10bc3f79630f240946db1",
     "packages": [],
     "packages-dev": [
         {