diff --git a/composer.lock b/composer.lock
index 6441a1142..eec19ebf1 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1582,16 +1582,16 @@
         },
         {
             "name": "league/flysystem",
-            "version": "1.1.3",
+            "version": "1.1.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/thephpleague/flysystem.git",
-                "reference": "9be3b16c877d477357c015cec057548cf9b2a14a"
+                "reference": "f3ad69181b8afed2c9edf7be5a2918144ff4ea32"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/thephpleague/flysystem/zipball/9be3b16c877d477357c015cec057548cf9b2a14a",
-                "reference": "9be3b16c877d477357c015cec057548cf9b2a14a",
+                "url": "https://api.github.com/repos/thephpleague/flysystem/zipball/f3ad69181b8afed2c9edf7be5a2918144ff4ea32",
+                "reference": "f3ad69181b8afed2c9edf7be5a2918144ff4ea32",
                 "shasum": ""
             },
             "require": {
@@ -1607,7 +1607,6 @@
                 "phpunit/phpunit": "^8.5.8"
             },
             "suggest": {
-                "ext-fileinfo": "Required for MimeType",
                 "ext-ftp": "Allows you to use FTP server storage",
                 "ext-openssl": "Allows you to use FTPS server storage",
                 "league/flysystem-aws-s3-v2": "Allows you to use S3 storage with AWS SDK v2",
@@ -1665,7 +1664,7 @@
             ],
             "support": {
                 "issues": "https://github.com/thephpleague/flysystem/issues",
-                "source": "https://github.com/thephpleague/flysystem/tree/1.x"
+                "source": "https://github.com/thephpleague/flysystem/tree/1.1.4"
             },
             "funding": [
                 {
@@ -1673,7 +1672,7 @@
                     "type": "other"
                 }
             ],
-            "time": "2020-08-23T07:39:11+00:00"
+            "time": "2021-06-23T21:56:05+00:00"
         },
         {
             "name": "league/mime-type-detection",
diff --git a/composer/autoload_classmap.php b/composer/autoload_classmap.php
index e6435d6c0..13e3b1b34 100644
--- a/composer/autoload_classmap.php
+++ b/composer/autoload_classmap.php
@@ -1529,6 +1529,7 @@
     'League\\Flysystem\\ConfigAwareTrait' => $vendorDir . '/league/flysystem/src/ConfigAwareTrait.php',
     'League\\Flysystem\\ConnectionErrorException' => $vendorDir . '/league/flysystem/src/ConnectionErrorException.php',
     'League\\Flysystem\\ConnectionRuntimeException' => $vendorDir . '/league/flysystem/src/ConnectionRuntimeException.php',
+    'League\\Flysystem\\CorruptedPathDetected' => $vendorDir . '/league/flysystem/src/CorruptedPathDetected.php',
     'League\\Flysystem\\Directory' => $vendorDir . '/league/flysystem/src/Directory.php',
     'League\\Flysystem\\Exception' => $vendorDir . '/league/flysystem/src/Exception.php',
     'League\\Flysystem\\File' => $vendorDir . '/league/flysystem/src/File.php',
diff --git a/composer/autoload_static.php b/composer/autoload_static.php
index fda5774f5..b8b22134f 100644
--- a/composer/autoload_static.php
+++ b/composer/autoload_static.php
@@ -2161,6 +2161,7 @@ class ComposerStaticInit2f23f73bc0cc116b4b1eee1521aa8652
         'League\\Flysystem\\ConfigAwareTrait' => __DIR__ . '/..' . '/league/flysystem/src/ConfigAwareTrait.php',
         'League\\Flysystem\\ConnectionErrorException' => __DIR__ . '/..' . '/league/flysystem/src/ConnectionErrorException.php',
         'League\\Flysystem\\ConnectionRuntimeException' => __DIR__ . '/..' . '/league/flysystem/src/ConnectionRuntimeException.php',
+        'League\\Flysystem\\CorruptedPathDetected' => __DIR__ . '/..' . '/league/flysystem/src/CorruptedPathDetected.php',
         'League\\Flysystem\\Directory' => __DIR__ . '/..' . '/league/flysystem/src/Directory.php',
         'League\\Flysystem\\Exception' => __DIR__ . '/..' . '/league/flysystem/src/Exception.php',
         'League\\Flysystem\\File' => __DIR__ . '/..' . '/league/flysystem/src/File.php',
diff --git a/composer/installed.json b/composer/installed.json
index 90021f823..9affbda93 100644
--- a/composer/installed.json
+++ b/composer/installed.json
@@ -1641,17 +1641,17 @@
         },
         {
             "name": "league/flysystem",
-            "version": "1.1.3",
-            "version_normalized": "1.1.3.0",
+            "version": "1.1.4",
+            "version_normalized": "1.1.4.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/thephpleague/flysystem.git",
-                "reference": "9be3b16c877d477357c015cec057548cf9b2a14a"
+                "reference": "f3ad69181b8afed2c9edf7be5a2918144ff4ea32"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/thephpleague/flysystem/zipball/9be3b16c877d477357c015cec057548cf9b2a14a",
-                "reference": "9be3b16c877d477357c015cec057548cf9b2a14a",
+                "url": "https://api.github.com/repos/thephpleague/flysystem/zipball/f3ad69181b8afed2c9edf7be5a2918144ff4ea32",
+                "reference": "f3ad69181b8afed2c9edf7be5a2918144ff4ea32",
                 "shasum": ""
             },
             "require": {
@@ -1667,7 +1667,6 @@
                 "phpunit/phpunit": "^8.5.8"
             },
             "suggest": {
-                "ext-fileinfo": "Required for MimeType",
                 "ext-ftp": "Allows you to use FTP server storage",
                 "ext-openssl": "Allows you to use FTPS server storage",
                 "league/flysystem-aws-s3-v2": "Allows you to use S3 storage with AWS SDK v2",
@@ -1682,7 +1681,7 @@
                 "spatie/flysystem-dropbox": "Allows you to use Dropbox storage",
                 "srmklive/flysystem-dropbox-v2": "Allows you to use Dropbox storage for PHP 5 applications"
             },
-            "time": "2020-08-23T07:39:11+00:00",
+            "time": "2021-06-23T21:56:05+00:00",
             "type": "library",
             "extra": {
                 "branch-alias": {
@@ -1727,7 +1726,7 @@
             ],
             "support": {
                 "issues": "https://github.com/thephpleague/flysystem/issues",
-                "source": "https://github.com/thephpleague/flysystem/tree/1.x"
+                "source": "https://github.com/thephpleague/flysystem/tree/1.1.4"
             },
             "funding": [
                 {
diff --git a/composer/installed.php b/composer/installed.php
index d6974a343..93097a32b 100644
--- a/composer/installed.php
+++ b/composer/installed.php
@@ -5,7 +5,7 @@
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
-        'reference' => 'e6a054be58a6c8b2fda92fbc7fbfd898f26fa0d2',
+        'reference' => '557bcea1bcccc0dbbb66305c98d208b1135b6096',
         'name' => 'nextcloud/3rdparty',
         'dev' => false,
     ),
@@ -218,12 +218,12 @@
             'dev_requirement' => false,
         ),
         'league/flysystem' => array(
-            'pretty_version' => '1.1.3',
-            'version' => '1.1.3.0',
+            'pretty_version' => '1.1.4',
+            'version' => '1.1.4.0',
             'type' => 'library',
             'install_path' => __DIR__ . '/../league/flysystem',
             'aliases' => array(),
-            'reference' => '9be3b16c877d477357c015cec057548cf9b2a14a',
+            'reference' => 'f3ad69181b8afed2c9edf7be5a2918144ff4ea32',
             'dev_requirement' => false,
         ),
         'league/mime-type-detection' => array(
@@ -286,7 +286,7 @@
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
-            'reference' => 'e6a054be58a6c8b2fda92fbc7fbfd898f26fa0d2',
+            'reference' => '557bcea1bcccc0dbbb66305c98d208b1135b6096',
             'dev_requirement' => false,
         ),
         'nextcloud/lognormalizer' => array(
diff --git a/composer/package-versions-deprecated/src/PackageVersions/Versions.php b/composer/package-versions-deprecated/src/PackageVersions/Versions.php
index f954bab29..97566364d 100644
--- a/composer/package-versions-deprecated/src/PackageVersions/Versions.php
+++ b/composer/package-versions-deprecated/src/PackageVersions/Versions.php
@@ -56,7 +56,7 @@ final class Versions
   'icewind/searchdav' => 'v2.0.0@c69806d900c2c9a5954bfabc80178d6eb0d63df4',
   'icewind/streams' => 'v0.7.5@0c6aae16ebdadb257f0bd089c1e1e4cf5e20ddc2',
   'justinrainbow/json-schema' => '5.2.10@2ba9c8c862ecd5510ed16c6340aa9f6eadb4f31b',
-  'league/flysystem' => '1.1.3@9be3b16c877d477357c015cec057548cf9b2a14a',
+  'league/flysystem' => '1.1.4@f3ad69181b8afed2c9edf7be5a2918144ff4ea32',
   'league/mime-type-detection' => '1.7.0@3b9dff8aaf7323590c1d2e443db701eb1f9aa0d3',
   'league/uri' => '6.4.0@09da64118eaf4c5d52f9923a1e6a5be1da52fd9a',
   'league/uri-interfaces' => '2.2.0@667f150e589d65d79c89ffe662e426704f84224f',
@@ -120,7 +120,7 @@ final class Versions
   'web-auth/cose-lib' => 'v3.3.1@eea6fae63ff5c81bf98c115b1be5f38a69682c16',
   'web-auth/metadata-service' => 'v3.3.1@8488d3a832a38cc81c670fce05de1e515c6e64b1',
   'web-auth/webauthn-lib' => 'v3.3.1@e411527a41c1013512fccdfce61681eb36484c77',
-  'nextcloud/3rdparty' => 'dev-master@e6a054be58a6c8b2fda92fbc7fbfd898f26fa0d2',
+  'nextcloud/3rdparty' => 'dev-master@557bcea1bcccc0dbbb66305c98d208b1135b6096',
 );
 
     private function __construct()
diff --git a/league/flysystem/composer.json b/league/flysystem/composer.json
index bd7434a87..32ec81d1b 100644
--- a/league/flysystem/composer.json
+++ b/league/flysystem/composer.json
@@ -40,7 +40,6 @@
         }
     },
     "suggest": {
-        "ext-fileinfo": "Required for MimeType",
         "league/flysystem-eventable-filesystem": "Allows you to use EventableFilesystem",
         "league/flysystem-rackspace": "Allows you to use Rackspace Cloud Files",
         "league/flysystem-azure": "Allows you to use Windows Azure Blob storage",
diff --git a/league/flysystem/src/CorruptedPathDetected.php b/league/flysystem/src/CorruptedPathDetected.php
new file mode 100644
index 000000000..81a27e5f2
--- /dev/null
+++ b/league/flysystem/src/CorruptedPathDetected.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace League\Flysystem;
+
+use LogicException;
+
+class CorruptedPathDetected extends LogicException implements FilesystemException
+{
+    /**
+     * @param string $path
+     * @return CorruptedPathDetected
+     */
+    public static function forPath($path)
+    {
+        return new CorruptedPathDetected("Corrupted path detected: " . $path);
+    }
+}
diff --git a/league/flysystem/src/Filesystem.php b/league/flysystem/src/Filesystem.php
index 59cc82ee4..c4eaf2781 100644
--- a/league/flysystem/src/Filesystem.php
+++ b/league/flysystem/src/Filesystem.php
@@ -8,12 +8,13 @@
 use League\Flysystem\Util\ContentListingFormatter;
 
 /**
- * @method array getWithMetadata(string $path, array $metadata)
- * @method bool  forceCopy(string $path, string $newpath)
- * @method bool  forceRename(string $path, string $newpath)
- * @method array listFiles(string $path = '', boolean $recursive = false)
- * @method array listPaths(string $path = '', boolean $recursive = false)
- * @method array listWith(array $keys = [], $directory = '', $recursive = false)
+ * @method void        emptyDir(string $dirname)
+ * @method array|false getWithMetadata(string $path, string[] $metadata)
+ * @method bool        forceCopy(string $path, string $newpath)
+ * @method bool        forceRename(string $path, string $newpath)
+ * @method array       listFiles(string $path = '', boolean $recursive = false)
+ * @method string[]    listPaths(string $path = '', boolean $recursive = false)
+ * @method array       listWith(string[] $keys = [], $directory = '', $recursive = false)
  */
 class Filesystem implements FilesystemInterface
 {
diff --git a/league/flysystem/src/MountManager.php b/league/flysystem/src/MountManager.php
index 150aee3a8..620f540ea 100644
--- a/league/flysystem/src/MountManager.php
+++ b/league/flysystem/src/MountManager.php
@@ -20,8 +20,6 @@
  * @method void assertPresent($path)
  * @method void assertAbsent($path)
  * @method Filesystem addPlugin(PluginInterface $plugin)
- *
- * @deprecated This functionality will be removed in 2.0
  */
 class MountManager implements FilesystemInterface
 {
diff --git a/league/flysystem/src/Plugin/GetWithMetadata.php b/league/flysystem/src/Plugin/GetWithMetadata.php
index 6fe4f0562..2f13d2fd2 100644
--- a/league/flysystem/src/Plugin/GetWithMetadata.php
+++ b/league/flysystem/src/Plugin/GetWithMetadata.php
@@ -20,8 +20,8 @@ public function getMethod()
     /**
      * Get metadata for an object with required metadata.
      *
-     * @param string $path     path to file
-     * @param array  $metadata metadata keys
+     * @param string   $path     path to file
+     * @param string[] $metadata metadata keys
      *
      * @throws InvalidArgumentException
      * @throws FileNotFoundException
diff --git a/league/flysystem/src/Plugin/ListPaths.php b/league/flysystem/src/Plugin/ListPaths.php
index 514bdf0b3..0889d1f8d 100644
--- a/league/flysystem/src/Plugin/ListPaths.php
+++ b/league/flysystem/src/Plugin/ListPaths.php
@@ -20,7 +20,7 @@ public function getMethod()
      * @param string $directory
      * @param bool   $recursive
      *
-     * @return array paths
+     * @return string[] paths
      */
     public function handle($directory = '', $recursive = false)
     {
diff --git a/league/flysystem/src/Plugin/ListWith.php b/league/flysystem/src/Plugin/ListWith.php
index d90464e52..d64debeca 100644
--- a/league/flysystem/src/Plugin/ListWith.php
+++ b/league/flysystem/src/Plugin/ListWith.php
@@ -17,9 +17,9 @@ public function getMethod()
     /**
      * List contents with metadata.
      *
-     * @param array  $keys
-     * @param string $directory
-     * @param bool   $recursive
+     * @param string[] $keys
+     * @param string   $directory
+     * @param bool     $recursive
      *
      * @return array listing with metadata
      */
diff --git a/league/flysystem/src/Util.php b/league/flysystem/src/Util.php
index 76454a05e..1a2db718d 100644
--- a/league/flysystem/src/Util.php
+++ b/league/flysystem/src/Util.php
@@ -5,6 +5,8 @@
 use League\Flysystem\Util\MimeType;
 use LogicException;
 
+use function strcmp;
+
 class Util
 {
     /**
@@ -102,8 +104,7 @@ public static function normalizePath($path)
     public static function normalizeRelativePath($path)
     {
         $path = str_replace('\\', '/', $path);
-        $path = static::removeFunkyWhiteSpace($path);
-
+        $path =  static::removeFunkyWhiteSpace($path);
         $parts = [];
 
         foreach (explode('/', $path) as $part) {
@@ -127,11 +128,13 @@ public static function normalizeRelativePath($path)
             }
         }
 
-        return implode('/', $parts);
+        $path = implode('/', $parts);
+
+        return $path;
     }
 
     /**
-     * Removes unprintable characters and invalid unicode characters.
+     * Rejects unprintable characters and invalid unicode characters.
      *
      * @param string $path
      *
@@ -139,10 +142,8 @@ public static function normalizeRelativePath($path)
      */
     protected static function removeFunkyWhiteSpace($path)
     {
-        // We do this check in a loop, since removing invalid unicode characters
-        // can lead to new characters being created.
-        while (preg_match('#\p{C}+|^\./#u', $path)) {
-            $path = preg_replace('#\p{C}+|^\./#u', '', $path);
+        if (preg_match('#\p{C}+#u', $path)) {
+            throw CorruptedPathDetected::forPath($path);
         }
 
         return $path;
@@ -205,7 +206,7 @@ public static function emulateDirectories(array $listing)
         $listedDirectories = [];
 
         foreach ($listing as $object) {
-            list($directories, $listedDirectories) = static::emulateObjectDirectories($object, $directories, $listedDirectories);
+            [$directories, $listedDirectories] = static::emulateObjectDirectories($object, $directories, $listedDirectories);
         }
 
         $directories = array_diff(array_unique($directories), array_unique($listedDirectories));