diff --git a/composer.lock b/composer.lock
index d06a20433..a8c48e940 100644
--- a/composer.lock
+++ b/composer.lock
@@ -2159,16 +2159,16 @@
         },
         {
             "name": "opis/closure",
-            "version": "3.6.1",
+            "version": "3.6.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/opis/closure.git",
-                "reference": "943b5d70cc5ae7483f6aff6ff43d7e34592ca0f5"
+                "reference": "06e2ebd25f2869e54a306dda991f7db58066f7f6"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/opis/closure/zipball/943b5d70cc5ae7483f6aff6ff43d7e34592ca0f5",
-                "reference": "943b5d70cc5ae7483f6aff6ff43d7e34592ca0f5",
+                "url": "https://api.github.com/repos/opis/closure/zipball/06e2ebd25f2869e54a306dda991f7db58066f7f6",
+                "reference": "06e2ebd25f2869e54a306dda991f7db58066f7f6",
                 "shasum": ""
             },
             "require": {
@@ -2216,7 +2216,11 @@
                 "serialization",
                 "serialize"
             ],
-            "time": "2020-11-07T02:01:34+00:00"
+            "support": {
+                "issues": "https://github.com/opis/closure/issues",
+                "source": "https://github.com/opis/closure/tree/3.6.2"
+            },
+            "time": "2021-04-09T13:42:10+00:00"
         },
         {
             "name": "patchwork/jsqueeze",
diff --git a/composer/InstalledVersions.php b/composer/InstalledVersions.php
index ffd0e95ff..0d8d7cc1b 100644
--- a/composer/InstalledVersions.php
+++ b/composer/InstalledVersions.php
@@ -32,7 +32,7 @@ class InstalledVersions
     'aliases' => 
     array (
     ),
-    'reference' => '1d1f743b8adb5123016837f5d0adcd9414d28bef',
+    'reference' => '0ff11bf7c9cbf121d1a67db80fd9bbc6d88dd2bc',
     'name' => 'nextcloud/3rdparty',
   ),
   'versions' => 
@@ -314,7 +314,7 @@ class InstalledVersions
       'aliases' => 
       array (
       ),
-      'reference' => '1d1f743b8adb5123016837f5d0adcd9414d28bef',
+      'reference' => '0ff11bf7c9cbf121d1a67db80fd9bbc6d88dd2bc',
     ),
     'nextcloud/lognormalizer' => 
     array (
@@ -343,12 +343,12 @@ class InstalledVersions
     ),
     'opis/closure' => 
     array (
-      'pretty_version' => '3.6.1',
-      'version' => '3.6.1.0',
+      'pretty_version' => '3.6.2',
+      'version' => '3.6.2.0',
       'aliases' => 
       array (
       ),
-      'reference' => '943b5d70cc5ae7483f6aff6ff43d7e34592ca0f5',
+      'reference' => '06e2ebd25f2869e54a306dda991f7db58066f7f6',
     ),
     'patchwork/jsqueeze' => 
     array (
diff --git a/composer/installed.json b/composer/installed.json
index 4d73bc475..f74f023fb 100644
--- a/composer/installed.json
+++ b/composer/installed.json
@@ -2245,17 +2245,17 @@
         },
         {
             "name": "opis/closure",
-            "version": "3.6.1",
-            "version_normalized": "3.6.1.0",
+            "version": "3.6.2",
+            "version_normalized": "3.6.2.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/opis/closure.git",
-                "reference": "943b5d70cc5ae7483f6aff6ff43d7e34592ca0f5"
+                "reference": "06e2ebd25f2869e54a306dda991f7db58066f7f6"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/opis/closure/zipball/943b5d70cc5ae7483f6aff6ff43d7e34592ca0f5",
-                "reference": "943b5d70cc5ae7483f6aff6ff43d7e34592ca0f5",
+                "url": "https://api.github.com/repos/opis/closure/zipball/06e2ebd25f2869e54a306dda991f7db58066f7f6",
+                "reference": "06e2ebd25f2869e54a306dda991f7db58066f7f6",
                 "shasum": ""
             },
             "require": {
@@ -2265,7 +2265,7 @@
                 "jeremeamia/superclosure": "^2.0",
                 "phpunit/phpunit": "^4.0 || ^5.0 || ^6.0 || ^7.0 || ^8.0 || ^9.0"
             },
-            "time": "2020-11-07T02:01:34+00:00",
+            "time": "2021-04-09T13:42:10+00:00",
             "type": "library",
             "extra": {
                 "branch-alias": {
@@ -2305,6 +2305,10 @@
                 "serialization",
                 "serialize"
             ],
+            "support": {
+                "issues": "https://github.com/opis/closure/issues",
+                "source": "https://github.com/opis/closure/tree/3.6.2"
+            },
             "install-path": "../opis/closure"
         },
         {
@@ -6281,6 +6285,6 @@
             "install-path": "../web-auth/webauthn-lib"
         }
     ],
-    "dev": true,
+    "dev": false,
     "dev-package-names": []
 }
diff --git a/composer/installed.php b/composer/installed.php
index af1522977..ec586de1e 100644
--- a/composer/installed.php
+++ b/composer/installed.php
@@ -6,7 +6,7 @@
     'aliases' => 
     array (
     ),
-    'reference' => '1d1f743b8adb5123016837f5d0adcd9414d28bef',
+    'reference' => '0ff11bf7c9cbf121d1a67db80fd9bbc6d88dd2bc',
     'name' => 'nextcloud/3rdparty',
   ),
   'versions' => 
@@ -288,7 +288,7 @@
       'aliases' => 
       array (
       ),
-      'reference' => '1d1f743b8adb5123016837f5d0adcd9414d28bef',
+      'reference' => '0ff11bf7c9cbf121d1a67db80fd9bbc6d88dd2bc',
     ),
     'nextcloud/lognormalizer' => 
     array (
@@ -317,12 +317,12 @@
     ),
     'opis/closure' => 
     array (
-      'pretty_version' => '3.6.1',
-      'version' => '3.6.1.0',
+      'pretty_version' => '3.6.2',
+      'version' => '3.6.2.0',
       'aliases' => 
       array (
       ),
-      'reference' => '943b5d70cc5ae7483f6aff6ff43d7e34592ca0f5',
+      'reference' => '06e2ebd25f2869e54a306dda991f7db58066f7f6',
     ),
     'patchwork/jsqueeze' => 
     array (
diff --git a/composer/package-versions-deprecated/src/PackageVersions/Versions.php b/composer/package-versions-deprecated/src/PackageVersions/Versions.php
index 9d8c0581b..0bf655f2f 100644
--- a/composer/package-versions-deprecated/src/PackageVersions/Versions.php
+++ b/composer/package-versions-deprecated/src/PackageVersions/Versions.php
@@ -65,7 +65,7 @@ final class Versions
   'mtdowling/jmespath.php' => '2.6.0@42dae2cbd13154083ca6d70099692fef8ca84bfb',
   'nextcloud/lognormalizer' => 'v1.0.0@87445d69225c247aaff64643b1fc83c6d6df741f',
   'nikic/php-parser' => 'v4.10.5@4432ba399e47c66624bc73c8c0f811e5c109576f',
-  'opis/closure' => '3.6.1@943b5d70cc5ae7483f6aff6ff43d7e34592ca0f5',
+  'opis/closure' => '3.6.2@06e2ebd25f2869e54a306dda991f7db58066f7f6',
   'patchwork/jsqueeze' => 'v2.0.5@693d64850eab2ce6a7c8f7cf547e1ab46e69d542',
   'pear/archive_tar' => '1.4.13@2b87b41178cc6d4ad3cba678a46a1cae49786011',
   'pear/console_getopt' => 'v1.4.3@a41f8d3e668987609178c7c4a9fe48fecac53fa0',
@@ -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@1d1f743b8adb5123016837f5d0adcd9414d28bef',
+  'nextcloud/3rdparty' => 'dev-master@0ff11bf7c9cbf121d1a67db80fd9bbc6d88dd2bc',
 );
 
     private function __construct()
diff --git a/opis/closure/CHANGELOG.md b/opis/closure/CHANGELOG.md
index 2e0351564..16c9e3dae 100644
--- a/opis/closure/CHANGELOG.md
+++ b/opis/closure/CHANGELOG.md
@@ -1,6 +1,10 @@
 CHANGELOG
 ---------
 
+### v3.6.2, 2021.04.09
+
+- Fixed string interpolation
+
 ### v3.6.1, 2020.11.07
 
 - Fixed serialization error [#84](https://github.com/opis/closure/issues/84)
diff --git a/opis/closure/README.md b/opis/closure/README.md
index 193380065..f5f3ad8cd 100644
--- a/opis/closure/README.md
+++ b/opis/closure/README.md
@@ -45,7 +45,7 @@ The full documentation for this library can be found [here][documentation].
 
 ## Requirements
 
-* PHP ^5.4 || ^7.0
+* PHP ^5.4 || ^7.0 || ^8.0
 
 ## Installation
 
@@ -89,4 +89,4 @@ So our advice regarding the `Opis\Closure\serialize|unserialize` functions is to
 [Packagist]: https://packagist.org/packages/opis/closure "Packagist"
 [Composer]: https://getcomposer.org "Composer"
 [SemVer]: http://semver.org/ "Semantic versioning"
-[CHANGELOG]: https://github.com/opis/closure/blob/master/CHANGELOG.md "Changelog"
\ No newline at end of file
+[CHANGELOG]: https://github.com/opis/closure/blob/master/CHANGELOG.md "Changelog"
diff --git a/opis/closure/autoload.php b/opis/closure/autoload.php
index a928014fd..48b10f66f 100644
--- a/opis/closure/autoload.php
+++ b/opis/closure/autoload.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/opis/closure/functions.php b/opis/closure/functions.php
index 681854c6b..38dcb91ff 100644
--- a/opis/closure/functions.php
+++ b/opis/closure/functions.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/opis/closure/src/Analyzer.php b/opis/closure/src/Analyzer.php
index a30be77a9..9618b1c76 100644
--- a/opis/closure/src/Analyzer.php
+++ b/opis/closure/src/Analyzer.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/opis/closure/src/ClosureContext.php b/opis/closure/src/ClosureContext.php
index d68cf9887..d8f13d9db 100644
--- a/opis/closure/src/ClosureContext.php
+++ b/opis/closure/src/ClosureContext.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/opis/closure/src/ClosureScope.php b/opis/closure/src/ClosureScope.php
index 71ad4148f..3afd9b550 100644
--- a/opis/closure/src/ClosureScope.php
+++ b/opis/closure/src/ClosureScope.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/opis/closure/src/ClosureStream.php b/opis/closure/src/ClosureStream.php
index f538419c1..d77d97c82 100644
--- a/opis/closure/src/ClosureStream.php
+++ b/opis/closure/src/ClosureStream.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/opis/closure/src/ISecurityProvider.php b/opis/closure/src/ISecurityProvider.php
index d3b0a2931..54e2e20ae 100644
--- a/opis/closure/src/ISecurityProvider.php
+++ b/opis/closure/src/ISecurityProvider.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/opis/closure/src/ReflectionClosure.php b/opis/closure/src/ReflectionClosure.php
index dad0b3399..1f6a8322d 100644
--- a/opis/closure/src/ReflectionClosure.php
+++ b/opis/closure/src/ReflectionClosure.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
@@ -271,7 +271,7 @@ public function getCode()
                         case T_CURLY_OPEN:
                         case T_DOLLAR_OPEN_CURLY_BRACES:
                         case '{':
-                            $code .= '{';
+                            $code .= is_array($token) ? $token[1] : $token;
                             $open++;
                             break;
                         case '}':
diff --git a/opis/closure/src/SecurityException.php b/opis/closure/src/SecurityException.php
index 6a107eec8..b65f5cb83 100644
--- a/opis/closure/src/SecurityException.php
+++ b/opis/closure/src/SecurityException.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/opis/closure/src/SecurityProvider.php b/opis/closure/src/SecurityProvider.php
index 5ae4116a9..19529173a 100644
--- a/opis/closure/src/SecurityProvider.php
+++ b/opis/closure/src/SecurityProvider.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/opis/closure/src/SelfReference.php b/opis/closure/src/SelfReference.php
index 3c6ec80dd..425edf275 100644
--- a/opis/closure/src/SelfReference.php
+++ b/opis/closure/src/SelfReference.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/opis/closure/src/SerializableClosure.php b/opis/closure/src/SerializableClosure.php
index 8f254d149..1025ff51b 100644
--- a/opis/closure/src/SerializableClosure.php
+++ b/opis/closure/src/SerializableClosure.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */