diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9bb15cc..6e79f4d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,16 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [11.2.3] - 2026-09-28
+### Fixed
+- Generated clients can no longer resolve dependency versions that raise PHP 8.4+ deprecations: the generated `composer.json` now requires `docler-labs/api-client-exception` `^1.0 || ^2.3.1` (was `^1.0 || ^2.0`) and, for the Guzzle HTTP message implementation, `guzzlehttp/psr7` `^1.6 || ^2.7` (was `^1.6 || ^2.6`). The 1.x lines stay allowed, so every `CLIENT_PHP_VERSION` target keeps resolving; on PHP 7.4+ Composer now picks only releases that run deprecation-free on PHP 8.5
+
+### Changed
+- Updated `docler-labs/api-client-exception` to 2.3.1 and `guzzlehttp/psr7` to 2.13.1 in the `example` and `example3_1` lockfiles, so the acceptance tests also run deprecation-free on PHP 8.5
+- Updated `composer/composer` to 2.2.30 (development dependency)
+
+Generated code is unchanged; only the generated `composer.json` constraints differ.
+
 ## [11.2.2] - 2026-08-07
 ### Security
 - Updated `guzzlehttp/guzzle` to 7.15.2, resolving CVE-2026-69246 (a noncanonical host can bypass host-based checks) along with the earlier 7.12.x–7.15.x advisories
diff --git a/example/PetStoreClient/composer.json b/example/PetStoreClient/composer.json
index c7fbd1e..8379b75 100644
--- a/example/PetStoreClient/composer.json
+++ b/example/PetStoreClient/composer.json
@@ -10,10 +10,10 @@
     },
     "require": {
         "php": "^7.4 || ^8.0",
-        "docler-labs/api-client-exception": "^1.0 || ^2.0",
+        "docler-labs/api-client-exception": "^1.0 || ^2.3.1",
         "ext-dom": "*",
         "ext-json": "*",
-        "guzzlehttp/psr7": "^1.6 || ^2.6",
+        "guzzlehttp/psr7": "^1.6 || ^2.7",
         "pimple/pimple": "^3.5",
         "psr/container": "^1.0 || ^2.0",
         "psr/http-client": "^1.0"
diff --git a/example/PetStoreClient/src/Serializer/BodySerializer.php b/example/PetStoreClient/src/Serializer/BodySerializer.php
index b038a0f..5b9832c 100644
--- a/example/PetStoreClient/src/Serializer/BodySerializer.php
+++ b/example/PetStoreClient/src/Serializer/BodySerializer.php
@@ -15,11 +15,14 @@
 use InvalidArgumentException;
 use OpenApi\PetStoreClient\Request\RequestInterface;
 use OpenApi\PetStoreClient\Serializer\ContentType\ContentTypeSerializerInterface;
+use OpenApi\PetStoreClient\Serializer\ContentType\JsonContentTypeSerializer;
 use Psr\Http\Message\ResponseInterface;
 use Throwable;
 
 class BodySerializer
 {
+    private const JSON_SUFFIX = '+json';
+
     /** @var ContentTypeSerializerInterface[] */
     private $contentTypeSerializers = [];
 
@@ -66,11 +69,29 @@ public function unserializeResponse(ResponseInterface $response): array
 
     private function getContentTypeSerializer(string $contentType): ContentTypeSerializerInterface
     {
-        $contentType = strtolower(trim(explode(';', $contentType)[0]));
-        if (!isset($this->contentTypeSerializers[$contentType])) {
-            throw new InvalidArgumentException(sprintf('Serializer for `%s` is not found. Supported: %s', $contentType, json_encode(array_keys($this->contentTypeSerializers))));
+        $normalizedContentType = $this->normalizeContentType($contentType);
+        if (isset($this->contentTypeSerializers[$normalizedContentType])) {
+            return $this->contentTypeSerializers[$normalizedContentType];
+        }
+        // RFC 6839: +json suffix indicates JSON-based format, fall back to JSON serializer
+        if ($this->isJsonBasedContentType($normalizedContentType)) {
+            return $this->contentTypeSerializers[JsonContentTypeSerializer::MIME_TYPE];
         }
+        throw new InvalidArgumentException(sprintf('Serializer for `%s` is not found. Supported: %s', $normalizedContentType, json_encode(array_keys($this->contentTypeSerializers))));
+    }
+
+    private function normalizeContentType(string $contentType): string
+    {
+        return strtolower(trim(explode(';', $contentType)[0]));
+    }
 
-        return $this->contentTypeSerializers[$contentType];
+    private function isJsonBasedContentType(string $normalizedContentType): bool
+    {
+        return $this->endsWith($normalizedContentType, self::JSON_SUFFIX) && isset($this->contentTypeSerializers[JsonContentTypeSerializer::MIME_TYPE]);
+    }
+
+    private function endsWith(string $haystack, string $needle): bool
+    {
+        return $needle === '' || substr($haystack, -strlen($needle)) === $needle;
     }
 }
diff --git a/example/composer.lock b/example/composer.lock
index 30d4ddd..ea1d012 100644
--- a/example/composer.lock
+++ b/example/composer.lock
@@ -8,22 +8,23 @@
     "packages": [
         {
             "name": "docler-labs/api-client-exception",
-            "version": "2.0.0",
+            "version": "2.3.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/DoclerLabs/api-client-exception.git",
-                "reference": "a3ec4018885b9ae193f01e04d886038020d7855e"
+                "reference": "eb574734d32c2a624d1f8fe17dc1d5252ba252d6"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/DoclerLabs/api-client-exception/zipball/a3ec4018885b9ae193f01e04d886038020d7855e",
-                "reference": "a3ec4018885b9ae193f01e04d886038020d7855e",
+                "url": "https://api.github.com/repos/DoclerLabs/api-client-exception/zipball/eb574734d32c2a624d1f8fe17dc1d5252ba252d6",
+                "reference": "eb574734d32c2a624d1f8fe17dc1d5252ba252d6",
                 "shasum": ""
             },
             "require": {
+                "fig/http-message-util": "^1.1",
                 "php": "^7.4 || ^8.0",
                 "psr/http-client": "^1.0",
-                "psr/http-message": "^1.0"
+                "psr/http-message": "^1.0 || ^2.0"
             },
             "require-dev": {
                 "phpunit/phpunit": "^9.5"
@@ -48,9 +49,65 @@
             ],
             "support": {
                 "issues": "https://github.com/DoclerLabs/api-client-exception/issues",
-                "source": "https://github.com/DoclerLabs/api-client-exception/tree/2.0.0"
+                "source": "https://github.com/DoclerLabs/api-client-exception/tree/2.3.1"
+            },
+            "time": "2026-09-28T09:26:44+00:00"
+        },
+        {
+            "name": "fig/http-message-util",
+            "version": "1.1.5",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/http-message-util.git",
+                "reference": "9d94dc0154230ac39e5bf89398b324a86f63f765"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/http-message-util/zipball/9d94dc0154230ac39e5bf89398b324a86f63f765",
+                "reference": "9d94dc0154230ac39e5bf89398b324a86f63f765",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.3 || ^7.0 || ^8.0"
+            },
+            "suggest": {
+                "psr/http-message": "The package containing the PSR-7 interfaces"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.1.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Fig\\Http\\Message\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "https://www.php-fig.org/"
+                }
+            ],
+            "description": "Utility classes and constants for use with PSR-7 (psr/http-message)",
+            "keywords": [
+                "http",
+                "http-message",
+                "psr",
+                "psr-7",
+                "request",
+                "response"
+            ],
+            "support": {
+                "issues": "https://github.com/php-fig/http-message-util/issues",
+                "source": "https://github.com/php-fig/http-message-util/tree/1.1.5"
             },
-            "time": "2022-11-21T12:45:09+00:00"
+            "time": "2020-11-24T22:02:12+00:00"
         },
         {
             "name": "guzzlehttp/guzzle",
@@ -266,16 +323,16 @@
         },
         {
             "name": "guzzlehttp/psr7",
-            "version": "2.13.0",
+            "version": "2.13.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/psr7.git",
-                "reference": "dad89620b7a6edb60c15858442eb2e408b45d8f4"
+                "reference": "95e7828100de18b4e269fb1703be530082d5166d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/psr7/zipball/dad89620b7a6edb60c15858442eb2e408b45d8f4",
-                "reference": "dad89620b7a6edb60c15858442eb2e408b45d8f4",
+                "url": "https://api.github.com/repos/guzzle/psr7/zipball/95e7828100de18b4e269fb1703be530082d5166d",
+                "reference": "95e7828100de18b4e269fb1703be530082d5166d",
                 "shasum": ""
             },
             "require": {
@@ -365,7 +422,7 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/psr7/issues",
-                "source": "https://github.com/guzzle/psr7/tree/2.13.0"
+                "source": "https://github.com/guzzle/psr7/tree/2.13.1"
             },
             "funding": [
                 {
@@ -381,7 +438,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-07-16T22:23:49+00:00"
+            "time": "2026-08-24T09:13:11+00:00"
         },
         {
             "name": "openapi/pet-store-client",
@@ -389,13 +446,13 @@
             "dist": {
                 "type": "path",
                 "url": "PetStoreClient",
-                "reference": "93ea26f4a1d5f4436e771c9a3fe34e3da0ee2010"
+                "reference": "913a168df8522adcead52b9c2e1287962df7b070"
             },
             "require": {
-                "docler-labs/api-client-exception": "^1.0 || ^2.0",
+                "docler-labs/api-client-exception": "^1.0 || ^2.3.1",
                 "ext-dom": "*",
                 "ext-json": "*",
-                "guzzlehttp/psr7": "^1.6 || ^2.6",
+                "guzzlehttp/psr7": "^1.6 || ^2.7",
                 "php": "^7.4 || ^8.0",
                 "pimple/pimple": "^3.5",
                 "psr/container": "^1.0 || ^2.0",
diff --git a/example3_1/PetStoreClient/composer.json b/example3_1/PetStoreClient/composer.json
index b52c117..5d9072f 100644
--- a/example3_1/PetStoreClient/composer.json
+++ b/example3_1/PetStoreClient/composer.json
@@ -10,10 +10,10 @@
     },
     "require": {
         "php": "^7.4 || ^8.0",
-        "docler-labs/api-client-exception": "^1.0 || ^2.0",
+        "docler-labs/api-client-exception": "^1.0 || ^2.3.1",
         "ext-dom": "*",
         "ext-json": "*",
-        "guzzlehttp/psr7": "^1.6 || ^2.6",
+        "guzzlehttp/psr7": "^1.6 || ^2.7",
         "pimple/pimple": "^3.5",
         "psr/container": "^1.0 || ^2.0",
         "psr/http-client": "^1.0"
diff --git a/example3_1/PetStoreClient/src/Serializer/BodySerializer.php b/example3_1/PetStoreClient/src/Serializer/BodySerializer.php
index b038a0f..5b9832c 100644
--- a/example3_1/PetStoreClient/src/Serializer/BodySerializer.php
+++ b/example3_1/PetStoreClient/src/Serializer/BodySerializer.php
@@ -15,11 +15,14 @@
 use InvalidArgumentException;
 use OpenApi\PetStoreClient\Request\RequestInterface;
 use OpenApi\PetStoreClient\Serializer\ContentType\ContentTypeSerializerInterface;
+use OpenApi\PetStoreClient\Serializer\ContentType\JsonContentTypeSerializer;
 use Psr\Http\Message\ResponseInterface;
 use Throwable;
 
 class BodySerializer
 {
+    private const JSON_SUFFIX = '+json';
+
     /** @var ContentTypeSerializerInterface[] */
     private $contentTypeSerializers = [];
 
@@ -66,11 +69,29 @@ public function unserializeResponse(ResponseInterface $response): array
 
     private function getContentTypeSerializer(string $contentType): ContentTypeSerializerInterface
     {
-        $contentType = strtolower(trim(explode(';', $contentType)[0]));
-        if (!isset($this->contentTypeSerializers[$contentType])) {
-            throw new InvalidArgumentException(sprintf('Serializer for `%s` is not found. Supported: %s', $contentType, json_encode(array_keys($this->contentTypeSerializers))));
+        $normalizedContentType = $this->normalizeContentType($contentType);
+        if (isset($this->contentTypeSerializers[$normalizedContentType])) {
+            return $this->contentTypeSerializers[$normalizedContentType];
+        }
+        // RFC 6839: +json suffix indicates JSON-based format, fall back to JSON serializer
+        if ($this->isJsonBasedContentType($normalizedContentType)) {
+            return $this->contentTypeSerializers[JsonContentTypeSerializer::MIME_TYPE];
         }
+        throw new InvalidArgumentException(sprintf('Serializer for `%s` is not found. Supported: %s', $normalizedContentType, json_encode(array_keys($this->contentTypeSerializers))));
+    }
+
+    private function normalizeContentType(string $contentType): string
+    {
+        return strtolower(trim(explode(';', $contentType)[0]));
+    }
 
-        return $this->contentTypeSerializers[$contentType];
+    private function isJsonBasedContentType(string $normalizedContentType): bool
+    {
+        return $this->endsWith($normalizedContentType, self::JSON_SUFFIX) && isset($this->contentTypeSerializers[JsonContentTypeSerializer::MIME_TYPE]);
+    }
+
+    private function endsWith(string $haystack, string $needle): bool
+    {
+        return $needle === '' || substr($haystack, -strlen($needle)) === $needle;
     }
 }
diff --git a/example3_1/composer.lock b/example3_1/composer.lock
index 629445d..1670374 100644
--- a/example3_1/composer.lock
+++ b/example3_1/composer.lock
@@ -8,22 +8,23 @@
     "packages": [
         {
             "name": "docler-labs/api-client-exception",
-            "version": "2.0.0",
+            "version": "2.3.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/DoclerLabs/api-client-exception.git",
-                "reference": "a3ec4018885b9ae193f01e04d886038020d7855e"
+                "reference": "eb574734d32c2a624d1f8fe17dc1d5252ba252d6"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/DoclerLabs/api-client-exception/zipball/a3ec4018885b9ae193f01e04d886038020d7855e",
-                "reference": "a3ec4018885b9ae193f01e04d886038020d7855e",
+                "url": "https://api.github.com/repos/DoclerLabs/api-client-exception/zipball/eb574734d32c2a624d1f8fe17dc1d5252ba252d6",
+                "reference": "eb574734d32c2a624d1f8fe17dc1d5252ba252d6",
                 "shasum": ""
             },
             "require": {
+                "fig/http-message-util": "^1.1",
                 "php": "^7.4 || ^8.0",
                 "psr/http-client": "^1.0",
-                "psr/http-message": "^1.0"
+                "psr/http-message": "^1.0 || ^2.0"
             },
             "require-dev": {
                 "phpunit/phpunit": "^9.5"
@@ -48,9 +49,65 @@
             ],
             "support": {
                 "issues": "https://github.com/DoclerLabs/api-client-exception/issues",
-                "source": "https://github.com/DoclerLabs/api-client-exception/tree/2.0.0"
+                "source": "https://github.com/DoclerLabs/api-client-exception/tree/2.3.1"
+            },
+            "time": "2026-09-28T09:26:44+00:00"
+        },
+        {
+            "name": "fig/http-message-util",
+            "version": "1.1.5",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/http-message-util.git",
+                "reference": "9d94dc0154230ac39e5bf89398b324a86f63f765"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/http-message-util/zipball/9d94dc0154230ac39e5bf89398b324a86f63f765",
+                "reference": "9d94dc0154230ac39e5bf89398b324a86f63f765",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.3 || ^7.0 || ^8.0"
+            },
+            "suggest": {
+                "psr/http-message": "The package containing the PSR-7 interfaces"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.1.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Fig\\Http\\Message\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "https://www.php-fig.org/"
+                }
+            ],
+            "description": "Utility classes and constants for use with PSR-7 (psr/http-message)",
+            "keywords": [
+                "http",
+                "http-message",
+                "psr",
+                "psr-7",
+                "request",
+                "response"
+            ],
+            "support": {
+                "issues": "https://github.com/php-fig/http-message-util/issues",
+                "source": "https://github.com/php-fig/http-message-util/tree/1.1.5"
             },
-            "time": "2022-11-21T12:45:09+00:00"
+            "time": "2020-11-24T22:02:12+00:00"
         },
         {
             "name": "guzzlehttp/guzzle",
@@ -266,16 +323,16 @@
         },
         {
             "name": "guzzlehttp/psr7",
-            "version": "2.13.0",
+            "version": "2.13.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/psr7.git",
-                "reference": "dad89620b7a6edb60c15858442eb2e408b45d8f4"
+                "reference": "95e7828100de18b4e269fb1703be530082d5166d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/psr7/zipball/dad89620b7a6edb60c15858442eb2e408b45d8f4",
-                "reference": "dad89620b7a6edb60c15858442eb2e408b45d8f4",
+                "url": "https://api.github.com/repos/guzzle/psr7/zipball/95e7828100de18b4e269fb1703be530082d5166d",
+                "reference": "95e7828100de18b4e269fb1703be530082d5166d",
                 "shasum": ""
             },
             "require": {
@@ -365,7 +422,7 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/psr7/issues",
-                "source": "https://github.com/guzzle/psr7/tree/2.13.0"
+                "source": "https://github.com/guzzle/psr7/tree/2.13.1"
             },
             "funding": [
                 {
@@ -381,7 +438,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-07-16T22:23:49+00:00"
+            "time": "2026-08-24T09:13:11+00:00"
         },
         {
             "name": "openapi/pet-store-client",
@@ -389,13 +446,13 @@
             "dist": {
                 "type": "path",
                 "url": "PetStoreClient",
-                "reference": "1992c0e21d828e5dd34d8932268aa9675a70e19d"
+                "reference": "2118ab38791149b10d8e5159b400c5d5212740d7"
             },
             "require": {
-                "docler-labs/api-client-exception": "^1.0 || ^2.0",
+                "docler-labs/api-client-exception": "^1.0 || ^2.3.1",
                 "ext-dom": "*",
                 "ext-json": "*",
-                "guzzlehttp/psr7": "^1.6 || ^2.6",
+                "guzzlehttp/psr7": "^1.6 || ^2.7",
                 "php": "^7.4 || ^8.0",
                 "pimple/pimple": "^3.5",
                 "psr/container": "^1.0 || ^2.0",
diff --git a/src/Generator/Implementation/HttpMessage/GuzzleHttpMessage.php b/src/Generator/Implementation/HttpMessage/GuzzleHttpMessage.php
index 4f09fa2..97aca2e 100644
--- a/src/Generator/Implementation/HttpMessage/GuzzleHttpMessage.php
+++ b/src/Generator/Implementation/HttpMessage/GuzzleHttpMessage.php
@@ -18,7 +18,7 @@ public function getRequestMapperClassName(): string
     public function getPackages(): array
     {
         return [
-            'guzzlehttp/psr7' => '^1.6 || ^2.6',
+            'guzzlehttp/psr7' => '^1.6 || ^2.7',
         ];
     }
 
diff --git a/src/Meta/ComposerJsonTemplate.php b/src/Meta/ComposerJsonTemplate.php
index 015ca88..4c6aac2 100644
--- a/src/Meta/ComposerJsonTemplate.php
+++ b/src/Meta/ComposerJsonTemplate.php
@@ -56,7 +56,7 @@ public function render(Specification $specification, MetaFileCollection $fileReg
     private function getCommonPackages(): array
     {
         return [
-            'docler-labs/api-client-exception' => '^1.0 || ^2.0',
+            'docler-labs/api-client-exception' => '^1.0 || ^2.3.1',
             'psr/container'                    => '^1.0 || ^2.0',
             'psr/http-client'                  => '^1.0',
         ];
diff --git a/test/suite/functional/Meta/ComposerJson/composer_default74.json b/test/suite/functional/Meta/ComposerJson/composer_default74.json
index 614783e..80d3070 100644
--- a/test/suite/functional/Meta/ComposerJson/composer_default74.json
+++ b/test/suite/functional/Meta/ComposerJson/composer_default74.json
@@ -9,9 +9,9 @@
     },
     "require": {
         "php": "^7.4 || ^8.0",
-        "docler-labs/api-client-exception": "^1.0 || ^2.0",
+        "docler-labs/api-client-exception": "^1.0 || ^2.3.1",
         "ext-json": "*",
-        "guzzlehttp/psr7": "^1.6 || ^2.6",
+        "guzzlehttp/psr7": "^1.6 || ^2.7",
         "pimple/pimple": "^3.5",
         "psr/container": "^1.0 || ^2.0",
         "psr/http-client": "^1.0"
diff --git a/test/suite/functional/Meta/ComposerJson/composer_default80.json b/test/suite/functional/Meta/ComposerJson/composer_default80.json
index 3cf7c63..00cc9b1 100644
--- a/test/suite/functional/Meta/ComposerJson/composer_default80.json
+++ b/test/suite/functional/Meta/ComposerJson/composer_default80.json
@@ -9,9 +9,9 @@
     },
     "require": {
         "php": "^8.0",
-        "docler-labs/api-client-exception": "^1.0 || ^2.0",
+        "docler-labs/api-client-exception": "^1.0 || ^2.3.1",
         "ext-json": "*",
-        "guzzlehttp/psr7": "^1.6 || ^2.6",
+        "guzzlehttp/psr7": "^1.6 || ^2.7",
         "pimple/pimple": "^3.5",
         "psr/container": "^1.0 || ^2.0",
         "psr/http-client": "^1.0"
diff --git a/test/suite/functional/Meta/ComposerJson/composer_default81.json b/test/suite/functional/Meta/ComposerJson/composer_default81.json
index cc46b6c..f1bbf3c 100644
--- a/test/suite/functional/Meta/ComposerJson/composer_default81.json
+++ b/test/suite/functional/Meta/ComposerJson/composer_default81.json
@@ -9,9 +9,9 @@
     },
     "require": {
         "php": "^8.1",
-        "docler-labs/api-client-exception": "^1.0 || ^2.0",
+        "docler-labs/api-client-exception": "^1.0 || ^2.3.1",
         "ext-json": "*",
-        "guzzlehttp/psr7": "^1.6 || ^2.6",
+        "guzzlehttp/psr7": "^1.6 || ^2.7",
         "pimple/pimple": "^3.5",
         "psr/container": "^1.0 || ^2.0",
         "psr/http-client": "^1.0"
diff --git a/test/suite/functional/Meta/ComposerJson/composer_guzzle_message74.json b/test/suite/functional/Meta/ComposerJson/composer_guzzle_message74.json
index 614783e..80d3070 100644
--- a/test/suite/functional/Meta/ComposerJson/composer_guzzle_message74.json
+++ b/test/suite/functional/Meta/ComposerJson/composer_guzzle_message74.json
@@ -9,9 +9,9 @@
     },
     "require": {
         "php": "^7.4 || ^8.0",
-        "docler-labs/api-client-exception": "^1.0 || ^2.0",
+        "docler-labs/api-client-exception": "^1.0 || ^2.3.1",
         "ext-json": "*",
-        "guzzlehttp/psr7": "^1.6 || ^2.6",
+        "guzzlehttp/psr7": "^1.6 || ^2.7",
         "pimple/pimple": "^3.5",
         "psr/container": "^1.0 || ^2.0",
         "psr/http-client": "^1.0"
diff --git a/test/suite/functional/Meta/ComposerJson/composer_guzzle_message80.json b/test/suite/functional/Meta/ComposerJson/composer_guzzle_message80.json
index 3cf7c63..00cc9b1 100644
--- a/test/suite/functional/Meta/ComposerJson/composer_guzzle_message80.json
+++ b/test/suite/functional/Meta/ComposerJson/composer_guzzle_message80.json
@@ -9,9 +9,9 @@
     },
     "require": {
         "php": "^8.0",
-        "docler-labs/api-client-exception": "^1.0 || ^2.0",
+        "docler-labs/api-client-exception": "^1.0 || ^2.3.1",
         "ext-json": "*",
-        "guzzlehttp/psr7": "^1.6 || ^2.6",
+        "guzzlehttp/psr7": "^1.6 || ^2.7",
         "pimple/pimple": "^3.5",
         "psr/container": "^1.0 || ^2.0",
         "psr/http-client": "^1.0"
diff --git a/test/suite/functional/Meta/ComposerJson/composer_nyholm_message74.json b/test/suite/functional/Meta/ComposerJson/composer_nyholm_message74.json
index b83f5ef..318d40a 100644
--- a/test/suite/functional/Meta/ComposerJson/composer_nyholm_message74.json
+++ b/test/suite/functional/Meta/ComposerJson/composer_nyholm_message74.json
@@ -9,7 +9,7 @@
     },
     "require": {
         "php": "^7.4 || ^8.0",
-        "docler-labs/api-client-exception": "^1.0 || ^2.0",
+        "docler-labs/api-client-exception": "^1.0 || ^2.3.1",
         "ext-json": "*",
         "nyholm/psr7": "^1.3",
         "pimple/pimple": "^3.5",
diff --git a/test/suite/functional/Meta/ComposerJson/composer_nyholm_message80.json b/test/suite/functional/Meta/ComposerJson/composer_nyholm_message80.json
index f1f4e98..e4dff6a 100644
--- a/test/suite/functional/Meta/ComposerJson/composer_nyholm_message80.json
+++ b/test/suite/functional/Meta/ComposerJson/composer_nyholm_message80.json
@@ -9,7 +9,7 @@
     },
     "require": {
         "php": "^8.0",
-        "docler-labs/api-client-exception": "^1.0 || ^2.0",
+        "docler-labs/api-client-exception": "^1.0 || ^2.3.1",
         "ext-json": "*",
         "nyholm/psr7": "^1.3",
         "pimple/pimple": "^3.5",
diff --git a/test/suite/functional/Meta/ComposerJson/composer_with_intl_requirement74.json b/test/suite/functional/Meta/ComposerJson/composer_with_intl_requirement74.json
index 03e61ef..dde08e2 100644
--- a/test/suite/functional/Meta/ComposerJson/composer_with_intl_requirement74.json
+++ b/test/suite/functional/Meta/ComposerJson/composer_with_intl_requirement74.json
@@ -9,10 +9,10 @@
     },
     "require": {
         "php": "^7.4 || ^8.0",
-        "docler-labs/api-client-exception": "^1.0 || ^2.0",
+        "docler-labs/api-client-exception": "^1.0 || ^2.3.1",
         "ext-intl": "*",
         "ext-json": "*",
-        "guzzlehttp/psr7": "^1.6 || ^2.6",
+        "guzzlehttp/psr7": "^1.6 || ^2.7",
         "pimple/pimple": "^3.5",
         "psr/container": "^1.0 || ^2.0",
         "psr/http-client": "^1.0"
diff --git a/test/suite/functional/Meta/ComposerJson/composer_with_intl_requirement80.json b/test/suite/functional/Meta/ComposerJson/composer_with_intl_requirement80.json
index 3882fff..cfb4068 100644
--- a/test/suite/functional/Meta/ComposerJson/composer_with_intl_requirement80.json
+++ b/test/suite/functional/Meta/ComposerJson/composer_with_intl_requirement80.json
@@ -9,10 +9,10 @@
     },
     "require": {
         "php": "^8.0",
-        "docler-labs/api-client-exception": "^1.0 || ^2.0",
+        "docler-labs/api-client-exception": "^1.0 || ^2.3.1",
         "ext-intl": "*",
         "ext-json": "*",
-        "guzzlehttp/psr7": "^1.6 || ^2.6",
+        "guzzlehttp/psr7": "^1.6 || ^2.7",
         "pimple/pimple": "^3.5",
         "psr/container": "^1.0 || ^2.0",
         "psr/http-client": "^1.0"