diff --git a/composer.json b/composer.json
index 24256d331..5f1ea1604 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,7 @@
 		"aws/aws-sdk-php": "^3.240",
 		"bantu/ini-get-wrapper": "v1.0.1",
 		"cweagans/composer-patches": "^1.7",
-		"deepdiver/zipstreamer": "^v2.0.2",
+		"deepdiver/zipstreamer": "^2.0.3",
 		"deepdiver1975/tarstreamer": "^2.1.0",
 		"doctrine/dbal": "^3.7.0",
 		"egulias/email-validator": "^4.0.2",
diff --git a/composer.lock b/composer.lock
index 530b65a46..d90f4e4e0 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": "56028816e1d278224ea6eda9aefd1b4c",
+    "content-hash": "4d14ded14d6eb8487843f729ca5ae46a",
     "packages": [
         {
             "name": "aws/aws-crt-php",
@@ -294,22 +294,25 @@
         },
         {
             "name": "deepdiver/zipstreamer",
-            "version": "v2.0.2",
+            "version": "v2.0.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/DeepDiver1975/PHPZipStreamer.git",
-                "reference": "f5659266771aeb3e356f75d7f39a092a291953b3"
+                "reference": "b9d1f53453a5736285facb723252ea2169dc472e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/DeepDiver1975/PHPZipStreamer/zipball/f5659266771aeb3e356f75d7f39a092a291953b3",
-                "reference": "f5659266771aeb3e356f75d7f39a092a291953b3",
+                "url": "https://api.github.com/repos/DeepDiver1975/PHPZipStreamer/zipball/b9d1f53453a5736285facb723252ea2169dc472e",
+                "reference": "b9d1f53453a5736285facb723252ea2169dc472e",
                 "shasum": ""
             },
             "require": {
+                "ext-mbstring": "*",
                 "php": ">=7.1"
             },
             "require-dev": {
+                "ext-xdebug": "*",
+                "ext-zlib": "*",
                 "phpunit/phpunit": "^7 || ^8"
             },
             "suggest": {
@@ -360,9 +363,15 @@
             ],
             "support": {
                 "issues": "https://github.com/DeepDiver1975/PHPZipStreamer/issues",
-                "source": "https://github.com/DeepDiver1975/PHPZipStreamer/tree/v2.0.2"
+                "source": "https://github.com/DeepDiver1975/PHPZipStreamer/tree/v2.0.3"
             },
-            "time": "2023-11-14T16:21:07+00:00"
+            "funding": [
+                {
+                    "url": "https://github.com/DeepDiver1975",
+                    "type": "github"
+                }
+            ],
+            "time": "2024-03-13T14:30:52+00:00"
         },
         {
             "name": "deepdiver1975/tarstreamer",
diff --git a/composer/installed.json b/composer/installed.json
index 39382dc64..bd92d8b39 100644
--- a/composer/installed.json
+++ b/composer/installed.json
@@ -303,29 +303,32 @@
         },
         {
             "name": "deepdiver/zipstreamer",
-            "version": "v2.0.2",
-            "version_normalized": "2.0.2.0",
+            "version": "v2.0.3",
+            "version_normalized": "2.0.3.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/DeepDiver1975/PHPZipStreamer.git",
-                "reference": "f5659266771aeb3e356f75d7f39a092a291953b3"
+                "reference": "b9d1f53453a5736285facb723252ea2169dc472e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/DeepDiver1975/PHPZipStreamer/zipball/f5659266771aeb3e356f75d7f39a092a291953b3",
-                "reference": "f5659266771aeb3e356f75d7f39a092a291953b3",
+                "url": "https://api.github.com/repos/DeepDiver1975/PHPZipStreamer/zipball/b9d1f53453a5736285facb723252ea2169dc472e",
+                "reference": "b9d1f53453a5736285facb723252ea2169dc472e",
                 "shasum": ""
             },
             "require": {
+                "ext-mbstring": "*",
                 "php": ">=7.1"
             },
             "require-dev": {
+                "ext-xdebug": "*",
+                "ext-zlib": "*",
                 "phpunit/phpunit": "^7 || ^8"
             },
             "suggest": {
                 "ext-http": ">=0.10"
             },
-            "time": "2023-11-14T16:21:07+00:00",
+            "time": "2024-03-13T14:30:52+00:00",
             "type": "library",
             "installation-source": "dist",
             "autoload": {
@@ -372,8 +375,14 @@
             ],
             "support": {
                 "issues": "https://github.com/DeepDiver1975/PHPZipStreamer/issues",
-                "source": "https://github.com/DeepDiver1975/PHPZipStreamer/tree/v2.0.2"
+                "source": "https://github.com/DeepDiver1975/PHPZipStreamer/tree/v2.0.3"
             },
+            "funding": [
+                {
+                    "url": "https://github.com/DeepDiver1975",
+                    "type": "github"
+                }
+            ],
             "install-path": "../deepdiver/zipstreamer"
         },
         {
diff --git a/composer/installed.php b/composer/installed.php
index 69528c9db..888cfa9e7 100644
--- a/composer/installed.php
+++ b/composer/installed.php
@@ -3,11 +3,11 @@
         'name' => 'nextcloud/3rdparty',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => '945c283afd81531aaf4110bf0eba4add4d33bbc5',
+        'reference' => 'a4e59f7913e29be2220a6be3c6b616f1ec7e8e4c',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
-        'dev' => false,
+        'dev' => true,
     ),
     'versions' => array(
         'aws/aws-crt-php' => array(
@@ -56,9 +56,9 @@
             'dev_requirement' => false,
         ),
         'deepdiver/zipstreamer' => array(
-            'pretty_version' => 'v2.0.2',
-            'version' => '2.0.2.0',
-            'reference' => 'f5659266771aeb3e356f75d7f39a092a291953b3',
+            'pretty_version' => 'v2.0.3',
+            'version' => '2.0.3.0',
+            'reference' => 'b9d1f53453a5736285facb723252ea2169dc472e',
             'type' => 'library',
             'install_path' => __DIR__ . '/../deepdiver/zipstreamer',
             'aliases' => array(),
@@ -292,7 +292,7 @@
         'nextcloud/3rdparty' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => '945c283afd81531aaf4110bf0eba4add4d33bbc5',
+            'reference' => 'a4e59f7913e29be2220a6be3c6b616f1ec7e8e4c',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/deepdiver/zipstreamer/src/Count64.php b/deepdiver/zipstreamer/src/Count64.php
index ab58bbe8e..1101f0d57 100644
--- a/deepdiver/zipstreamer/src/Count64.php
+++ b/deepdiver/zipstreamer/src/Count64.php
@@ -22,8 +22,9 @@
  */
 namespace ZipStreamer;
 
-use \ZipStreamer\Lib\Count64_32;
-use \ZipStreamer\Lib\Count64_64;
+use ZipStreamer\Lib\Count64_32;
+use ZipStreamer\Lib\Count64_64;
+use ZipStreamer\Lib\Count64Base;
 
 const INT64_HIGH_MAP = 0xffffffff00000000;
 const INT64_LOW_MAP =  0x00000000ffffffff;
@@ -43,16 +44,6 @@ function urShift($bits, $shift) {
   return ($bits >> $shift) & ~(1 << (8 * PHP_INT_SIZE - 1) >> ($shift - 1));
 }
 
-/**
- * Convert binary data string to readable hex string
- *
- * @param string $data binary string
- * @return string readable hex string
- */
-function byte2hex($data) {
-  return unpack("h*", $data);
-}
-
 /**
  * Pack 1 byte data into binary string
  *
@@ -149,8 +140,8 @@ abstract class Count64 {
   public static function construct($value = 0, $limit32Bit = False) {
     if (4 == PHP_INT_SIZE) {
       return new Count64_32($value, $limit32Bit);
-    } else {
-      return new Count64_64($value, $limit32Bit);
     }
+
+      return new Count64_64($value, $limit32Bit);
   }
 }
diff --git a/deepdiver/zipstreamer/src/Lib/Count64Base.php b/deepdiver/zipstreamer/src/Lib/Count64Base.php
index 7ae5dcd69..a97a047fa 100644
--- a/deepdiver/zipstreamer/src/Lib/Count64Base.php
+++ b/deepdiver/zipstreamer/src/Lib/Count64Base.php
@@ -25,7 +25,7 @@
 abstract class Count64Base {
   protected $limit32Bit = False;
 
-  function __construct($value = 0, $limit32Bit = False) {
+  public function __construct($value = 0, $limit32Bit = False) {
     $this->limit32Bit = $limit32Bit;
     $this->set($value);
   }
diff --git a/deepdiver/zipstreamer/src/Lib/Count64_32.php b/deepdiver/zipstreamer/src/Lib/Count64_32.php
index e8c7ceb85..800577443 100644
--- a/deepdiver/zipstreamer/src/Lib/Count64_32.php
+++ b/deepdiver/zipstreamer/src/Lib/Count64_32.php
@@ -42,7 +42,7 @@ public function set($value) {
     if (is_int($value)) {
       $this->loBytes = $value;
       $this->hiBytes = 0;
-    } else if (is_array($value) && 2 == sizeof($value)) {
+    } else if (is_array($value) && 2 == count($value)) {
       $this->loBytes = $value[0];
       if ($this->limit32Bit && 0 !== $value[1]) {
         throw new \OverflowException(self::EXCEPTION_32BIT_OVERFLOW);
diff --git a/deepdiver/zipstreamer/src/Lib/Count64_64.php b/deepdiver/zipstreamer/src/Lib/Count64_64.php
index 1a31741ca..e27021a26 100644
--- a/deepdiver/zipstreamer/src/Lib/Count64_64.php
+++ b/deepdiver/zipstreamer/src/Lib/Count64_64.php
@@ -22,8 +22,9 @@
  */
 namespace ZipStreamer\Lib;
 
-use const \ZipStreamer\INT64_LOW_MAP;
-use const \ZipStreamer\INT_MAX_32;
+use function ZipStreamer\urShift;
+use const ZipStreamer\INT64_LOW_MAP;
+use const ZipStreamer\INT_MAX_32;
 
 class Count64_64 extends Count64Base {
   private $value;
@@ -46,7 +47,7 @@ public function set($value) {
         throw new \OverFlowException(self::EXCEPTION_32BIT_OVERFLOW);
       }
       $this->value = $value;
-    } else if (is_array($value) && 2 == sizeof($value)) {
+    } else if (is_array($value) && 2 == count($value)) {
       if ($this->limit32Bit && 0 !== $value[1]) {
         throw new \OverFlowException(self::EXCEPTION_32BIT_OVERFLOW);
       }
diff --git a/deepdiver/zipstreamer/src/ZipStreamer.php b/deepdiver/zipstreamer/src/ZipStreamer.php
index 6cd1a9710..e476eb62e 100644
--- a/deepdiver/zipstreamer/src/ZipStreamer.php
+++ b/deepdiver/zipstreamer/src/ZipStreamer.php
@@ -48,7 +48,7 @@ class ZipStreamer {
   private $extFileAttrFile;
   private $extFileAttrDir;
 
-  /** @var stream output stream zip file is written to */
+  /** @var resource $outStream output stream zip file is written to */
   private $outStream;
   /** @var boolean zip64 enabled */
   private $zip64 = True;
@@ -356,7 +356,7 @@ private function streamFileData($stream, $compress, $level) {
       $compStream = DeflateStream::create($level);
     }
 
-    while (!feof($stream) && $data = fread($stream, self::STREAM_CHUNK_SIZE)) {
+    while (!feof($stream) && ($data = fread($stream, self::STREAM_CHUNK_SIZE)) !== false) {
       $dataLength->add(strlen($data));
       hash_update($hashCtx, $data);
       if (COMPR::DEFLATE === $compress) {
@@ -438,7 +438,7 @@ private function addDataDescriptor($dataLength, $gzLength, $dataCRC32) {
 
   private function buildZip64EndOfCentralDirectoryRecord($cdRecLength) {
     $versionToExtract = $this->getVersionToExtract(False);
-    $cdRecCount = sizeof($this->cdRec);
+    $cdRecCount = count($this->cdRec);
 
     return ''
         . pack32le(self::ZIP64_END_OF_CENTRAL_DIRECTORY) // zip64 end of central dir signature         4 bytes  (0x06064b50)
@@ -517,12 +517,12 @@ private function buildCentralDirectoryHeader($filePath, $timestamp, $gpFlags,
   private function buildEndOfCentralDirectoryRecord($cdRecLength) {
     if ($this->zip64) {
       $diskNumber = -1;
-      $cdRecCount = min(sizeof($this->cdRec), 0xffff);
+      $cdRecCount = min(count($this->cdRec), 0xffff);
       $cdRecLength = -1;
       $offset = -1;
     } else {
       $diskNumber = 0;
-      $cdRecCount = sizeof($this->cdRec);
+      $cdRecCount = count($this->cdRec);
       $offset = $this->offset->getLoBytes();
     }
     //throw new \Exception(sprintf("zip64 %d diskno %d", $this->zip64, $diskNumber));
@@ -646,7 +646,7 @@ protected function __construct($level) {
       $class = self::PECL2_DEFLATE_STREAM_CLASS;
     }
     if (!class_exists($class)) {
-      new \Exception('unable to instantiate PECL deflate stream (requires pecl_http >= 0.10)');
+      throw new \Exception('unable to instantiate PECL deflate stream (requires pecl_http >= 0.10)');
     }
 
     $deflateFlags = constant($class . '::TYPE_RAW');
@@ -723,8 +723,8 @@ class GPFLAGS {
 
   // compression settings for deflate/deflate64
   const DEFL_NORM = 0x0000; // normal compression (COMP1 and COMP2 not set)
-  const DEFL_MAX = COMP1; // maximum compression
-  const DEFL_FAST = COMP2; // fast compression
+  const DEFL_MAX = self::COMP1; // maximum compression
+  const DEFL_FAST = self::COMP2; // fast compression
   const DEFL_SFAST = 0x0006; // superfast compression (COMP1 and COMP2 set)
 }