diff --git a/composer.lock b/composer.lock
index 76d598a86f..20889ca94d 100644
--- a/composer.lock
+++ b/composer.lock
@@ -828,26 +828,27 @@
         },
         {
             "name": "mpdf/mpdf",
-            "version": "v8.1.6",
+            "version": "v8.2.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/mpdf/mpdf.git",
-                "reference": "146c7c1dfd21c826b9d5bbfe3c15e52fd933c90f"
+                "reference": "170a236a588d177c2aa7447ce490a030ca68e6f4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/mpdf/mpdf/zipball/146c7c1dfd21c826b9d5bbfe3c15e52fd933c90f",
-                "reference": "146c7c1dfd21c826b9d5bbfe3c15e52fd933c90f",
+                "url": "https://api.github.com/repos/mpdf/mpdf/zipball/170a236a588d177c2aa7447ce490a030ca68e6f4",
+                "reference": "170a236a588d177c2aa7447ce490a030ca68e6f4",
                 "shasum": ""
             },
             "require": {
                 "ext-gd": "*",
                 "ext-mbstring": "*",
+                "mpdf/psr-http-message-shim": "^1.0 || ^2.0",
                 "mpdf/psr-log-aware-trait": "^2.0 || ^3.0",
                 "myclabs/deep-copy": "^1.7",
                 "paragonie/random_compat": "^1.4|^2.0|^9.99.99",
                 "php": "^5.6 || ^7.0 || ~8.0.0 || ~8.1.0 || ~8.2.0",
-                "psr/http-message": "^1.0",
+                "psr/http-message": "^1.0 || ^2.0",
                 "psr/log": "^1.0 || ^2.0 || ^3.0",
                 "setasign/fpdi": "^2.1"
             },
@@ -865,6 +866,9 @@
             },
             "type": "library",
             "autoload": {
+                "files": [
+                    "src/functions.php"
+                ],
                 "psr-4": {
                     "Mpdf\\": "src/"
                 }
@@ -901,7 +905,55 @@
                     "type": "custom"
                 }
             ],
-            "time": "2023-05-03T19:36:43+00:00"
+            "time": "2023-09-01T11:44:52+00:00"
+        },
+        {
+            "name": "mpdf/psr-http-message-shim",
+            "version": "2.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/mpdf/psr-http-message-shim.git",
+                "reference": "1cf4c0b68b8461cea27411ff961482ce7687e34f"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/mpdf/psr-http-message-shim/zipball/1cf4c0b68b8461cea27411ff961482ce7687e34f",
+                "reference": "1cf4c0b68b8461cea27411ff961482ce7687e34f",
+                "shasum": ""
+            },
+            "require": {
+                "psr/http-message": "^2.0"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Mpdf\\PsrHttpMessageShim\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Mark Dorison",
+                    "email": "mark@chromatichq.com"
+                },
+                {
+                    "name": "Kristofer Widholm",
+                    "email": "kristofer@chromatichq.com"
+                },
+                {
+                    "name": "Nigel Cunningham",
+                    "email": "nigel.cunningham@technocrat.com.au"
+                }
+            ],
+            "description": "Shim to allow support of different psr/message versions.",
+            "support": {
+                "issues": "https://github.com/mpdf/psr-http-message-shim/issues",
+                "source": "https://github.com/mpdf/psr-http-message-shim/tree/2.0.0"
+            },
+            "time": "2023-09-01T06:08:18+00:00"
         },
         {
             "name": "mpdf/psr-log-aware-trait",
@@ -2197,16 +2249,16 @@
         },
         {
             "name": "psr/http-message",
-            "version": "1.1",
+            "version": "2.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/php-fig/http-message.git",
-                "reference": "cb6ce4845ce34a8ad9e68117c10ee90a29919eba"
+                "reference": "402d35bcb92c70c026d1a6a9883f06b2ead23d71"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/php-fig/http-message/zipball/cb6ce4845ce34a8ad9e68117c10ee90a29919eba",
-                "reference": "cb6ce4845ce34a8ad9e68117c10ee90a29919eba",
+                "url": "https://api.github.com/repos/php-fig/http-message/zipball/402d35bcb92c70c026d1a6a9883f06b2ead23d71",
+                "reference": "402d35bcb92c70c026d1a6a9883f06b2ead23d71",
                 "shasum": ""
             },
             "require": {
@@ -2215,7 +2267,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.1.x-dev"
+                    "dev-master": "2.0.x-dev"
                 }
             },
             "autoload": {
@@ -2230,7 +2282,7 @@
             "authors": [
                 {
                     "name": "PHP-FIG",
-                    "homepage": "http://www.php-fig.org/"
+                    "homepage": "https://www.php-fig.org/"
                 }
             ],
             "description": "Common interface for HTTP messages",
@@ -2244,9 +2296,9 @@
                 "response"
             ],
             "support": {
-                "source": "https://github.com/php-fig/http-message/tree/1.1"
+                "source": "https://github.com/php-fig/http-message/tree/2.0"
             },
-            "time": "2023-04-04T09:50:52+00:00"
+            "time": "2023-04-04T09:54:51+00:00"
         },
         {
             "name": "psr/log",
@@ -3317,16 +3369,16 @@
         },
         {
             "name": "setasign/fpdi",
-            "version": "v2.3.7",
+            "version": "v2.5.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/Setasign/FPDI.git",
-                "reference": "bccc892d5fa1f48c43f8ba7db5ed4ba6f30c8c05"
+                "reference": "ecf0459643ec963febfb9a5d529dcd93656006a4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Setasign/FPDI/zipball/bccc892d5fa1f48c43f8ba7db5ed4ba6f30c8c05",
-                "reference": "bccc892d5fa1f48c43f8ba7db5ed4ba6f30c8c05",
+                "url": "https://api.github.com/repos/Setasign/FPDI/zipball/ecf0459643ec963febfb9a5d529dcd93656006a4",
+                "reference": "ecf0459643ec963febfb9a5d529dcd93656006a4",
                 "shasum": ""
             },
             "require": {
@@ -3339,7 +3391,7 @@
             "require-dev": {
                 "phpunit/phpunit": "~5.7",
                 "setasign/fpdf": "~1.8",
-                "setasign/tfpdf": "1.31",
+                "setasign/tfpdf": "~1.31",
                 "squizlabs/php_codesniffer": "^3.5",
                 "tecnickcom/tcpdf": "~6.2"
             },
@@ -3377,7 +3429,7 @@
             ],
             "support": {
                 "issues": "https://github.com/Setasign/FPDI/issues",
-                "source": "https://github.com/Setasign/FPDI/tree/v2.3.7"
+                "source": "https://github.com/Setasign/FPDI/tree/v2.5.0"
             },
             "funding": [
                 {
@@ -3385,7 +3437,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-02-09T10:38:43+00:00"
+            "time": "2023-09-28T10:46:27+00:00"
         },
         {
             "name": "symfony/config",
diff --git a/docs/changes/1.x/1.2.0.md b/docs/changes/1.x/1.2.0.md
index 40becc441d..a4810f16cd 100644
--- a/docs/changes/1.x/1.2.0.md
+++ b/docs/changes/1.x/1.2.0.md
@@ -36,4 +36,5 @@
 - Bump phpstan/phpstan-phpunit from 1.3.13 to 1.3.14 by [@dependabot](https://github.com/dependabot) in [#2457](https://github.com/PHPOffice/PHPWord/pull/2457)
 - Bump symfony/process from 5.4.26 to 5.4.28 by [@dependabot](https://github.com/dependabot) in [#2456](https://github.com/PHPOffice/PHPWord/pull/2456)
 - Bump phpunit/phpunit from 9.6.10 to 9.6.11 by [@dependabot](https://github.com/dependabot) in [#2455](https://github.com/PHPOffice/PHPWord/pull/2455)
-- Remove deprecated utf8_encode in PHP 8.2 by [@mhcwebdesign](https://github.com/mhcwebdesign) in [#2447](https://github.com/PHPOffice/PHPWord/pull/2447) & [#2472](https://github.com/PHPOffice/PHPWord/pull/2472)
\ No newline at end of file
+- Remove deprecated utf8_encode in PHP 8.2 by [@mhcwebdesign](https://github.com/mhcwebdesign) in [#2447](https://github.com/PHPOffice/PHPWord/pull/2447) & [#2472](https://github.com/PHPOffice/PHPWord/pull/2472)
+- Bump mpdf/mpdf from 8.1.6 to 8.2.0 by [@dependabot](https://github.com/dependabot) in [#2480](https://github.com/PHPOffice/PHPWord/pull/2480)
\ No newline at end of file