diff --git a/composer.lock b/composer.lock
index d4802c8d..1b0e5a5a 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": "cac78f3559e4cabadde10120dd09b100",
+    "content-hash": "ce56bad585aaf73764608d392ef7da0c",
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             "name": "bower-asset/bootstrap",
@@ -2307,48 +2307,65 @@
         },
         {
             "name": "mpdf/mpdf",
-            "version": "v6.1.3",
+            "version": "v7.1.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/mpdf/mpdf.git",
-                "reference": "7f138bf7508eac895ac2c13d2509b056ac7e7e97"
+                "reference": "5a124ed382cf9241597c7ba12f98a756daa7f8df"
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-                "url": "https://api.github.com/repos/mpdf/mpdf/zipball/7f138bf7508eac895ac2c13d2509b056ac7e7e97",
-                "reference": "7f138bf7508eac895ac2c13d2509b056ac7e7e97",
+                "url": "https://api.github.com/repos/mpdf/mpdf/zipball/5a124ed382cf9241597c7ba12f98a756daa7f8df",
+                "reference": "5a124ed382cf9241597c7ba12f98a756daa7f8df",
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             },
             "require": {
+                "ext-gd": "*",
                 "ext-mbstring": "*",
-                "php": ">=5.4.0",
+                "myclabs/deep-copy": "^1.7",
+                "paragonie/random_compat": "^1.4|^2.0|9.99.99",
+                "php": "^5.6 || ~7.0.0 || ~7.1.0 || ~7.2.0 || ~7.3.0",
+                "psr/log": "^1.0",
                 "setasign/fpdi": "1.6.*"
             },
             "require-dev": {
-                "phpunit/phpunit": "^4.7"
+                "mockery/mockery": "^0.9.5",
+                "phpunit/phpunit": "^5.0",
+                "squizlabs/php_codesniffer": "^2.7.0",
+                "tracy/tracy": "^2.4"
             },
             "suggest": {
+                "ext-bcmath": "Needed for generation of some types of barcodes",
+                "ext-xml": "Needed mainly for SVG manipulation",
                 "ext-zlib": "Needed for compression of embedded resources, such as fonts"
             },
             "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-development": "7.x-dev"
+                }
+            },
             "autoload": {
-                "classmap": [
-                    "mpdf.php",
-                    "classes"
-                ]
+                "psr-4": {
+                    "Mpdf\\": "src/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
-                "GPL-2.0"
+                "GPL-2.0-only"
             ],
             "authors": [
+                {
+                    "name": "Matěj Humpál",
+                    "role": "Developer, maintainer"
+                },
                 {
                     "name": "Ian Back",
-                    "role": "Developer"
+                    "role": "Developer (retired)"
                 }
             ],
-            "description": "A PHP class to generate PDF files from HTML with Unicode/UTF-8 and CJK support",
-            "homepage": "http://mpdf.github.io",
+            "description": "PHP library generating PDF files from UTF-8 encoded HTML",
+            "homepage": "https://mpdf.github.io",
             "keywords": [
                 "pdf",
                 "php",
@@ -2359,24 +2376,83 @@
                 "issues": "https://github.com/mpdf/mpdf/issues",
                 "source": "https://github.com/mpdf/mpdf"
             },
-            "time": "2016-12-12T10:42:18+00:00"
+            "time": "2019-01-08T11:38:17+00:00"
+        },
+        {
+            "name": "myclabs/deep-copy",
+            "version": "1.11.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/myclabs/DeepCopy.git",
+                "reference": "7284c22080590fb39f2ffa3e9057f10a4ddd0e0c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/7284c22080590fb39f2ffa3e9057f10a4ddd0e0c",
+                "reference": "7284c22080590fb39f2ffa3e9057f10a4ddd0e0c",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.1 || ^8.0"
+            },
+            "conflict": {
+                "doctrine/collections": "<1.6.8",
+                "doctrine/common": "<2.13.3 || >=3,<3.2.2"
+            },
+            "require-dev": {
+                "doctrine/collections": "^1.6.8",
+                "doctrine/common": "^2.13.3 || ^3.2.2",
+                "phpunit/phpunit": "^7.5.20 || ^8.5.23 || ^9.5.13"
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "src/DeepCopy/deep_copy.php"
+                ],
+                "psr-4": {
+                    "DeepCopy\\": "src/DeepCopy/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "Create deep copies (clones) of your objects",
+            "keywords": [
+                "clone",
+                "copy",
+                "duplicate",
+                "object",
+                "object graph"
+            ],
+            "support": {
+                "issues": "https://github.com/myclabs/DeepCopy/issues",
+                "source": "https://github.com/myclabs/DeepCopy/tree/1.11.1"
+            },
+            "funding": [
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/myclabs/deep-copy",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2023-03-08T13:26:56+00:00"
         },
         {
             "name": "paragonie/random_compat",
-            "version": "v9.99.100",
+            "version": "v9.99.99",
             "source": {
                 "type": "git",
                 "url": "https://github.com/paragonie/random_compat.git",
-                "reference": "996434e5492cb4c3edcb9168db6fbb1359ef965a"
+                "reference": "84b4dfb120c6f9b4ff7b3685f9b8f1aa365a0c95"
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             "dist": {
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-                "reference": "996434e5492cb4c3edcb9168db6fbb1359ef965a",
+                "url": "https://api.github.com/repos/paragonie/random_compat/zipball/84b4dfb120c6f9b4ff7b3685f9b8f1aa365a0c95",
+                "reference": "84b4dfb120c6f9b4ff7b3685f9b8f1aa365a0c95",
                 "shasum": ""
             },
             "require": {
-                "php": ">= 7"
+                "php": "^7"
             },
             "require-dev": {
                 "phpunit/phpunit": "4.*|5.*",
@@ -2409,7 +2485,57 @@
                 "issues": "https://github.com/paragonie/random_compat/issues",
                 "source": "https://github.com/paragonie/random_compat"
             },
-            "time": "2020-10-15T08:29:30+00:00"
+            "time": "2018-07-02T15:55:56+00:00"
+        },
+        {
+            "name": "psr/log",
+            "version": "1.1.4",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/log.git",
+                "reference": "d49695b909c3b7628b6289db5479a1c204601f11"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/log/zipball/d49695b909c3b7628b6289db5479a1c204601f11",
+                "reference": "d49695b909c3b7628b6289db5479a1c204601f11",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.1.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Log\\": "Psr/Log/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "https://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for logging libraries",
+            "homepage": "https://github.com/php-fig/log",
+            "keywords": [
+                "log",
+                "psr",
+                "psr-3"
+            ],
+            "support": {
+                "source": "https://github.com/php-fig/log/tree/1.1.4"
+            },
+            "time": "2021-05-03T11:20:27+00:00"
         },
         {
             "name": "select2/select2",
@@ -3987,5 +4113,5 @@
     "platform-overrides": {
         "php": "7.2.34"
     },
-    "plugin-api-version": "2.2.0"
+    "plugin-api-version": "2.3.0"
 }