diff --git a/composer.json b/composer.json
index 970bd1e..50fd2f2 100644
--- a/composer.json
+++ b/composer.json
@@ -8,7 +8,7 @@
     "homepage": "https://github.com/PlanetHoster/planethoster-php",
     "require": {
         "php": "^7.3 || ^8.0",
-        "guzzlehttp/guzzle": "~7.6.0"
+        "guzzlehttp/guzzle": "~7.7.0"
     },
     "config": {
         "platform": {
diff --git a/composer.lock b/composer.lock
index 326d90c..62284c5 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,25 +4,25 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "8f25ca289052c2b8aec8eb7ed86282ab",
+    "content-hash": "503ae8e3b30b0c66ce166cd1674720d0",
     "packages": [
         {
             "name": "guzzlehttp/guzzle",
-            "version": "7.6.1",
+            "version": "7.7.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/guzzle.git",
-                "reference": "8444a2bacf1960bc6a2b62ed86b8e72e11eebe51"
+                "reference": "fb7566caccf22d74d1ab270de3551f72a58399f5"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/8444a2bacf1960bc6a2b62ed86b8e72e11eebe51",
-                "reference": "8444a2bacf1960bc6a2b62ed86b8e72e11eebe51",
+                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/fb7566caccf22d74d1ab270de3551f72a58399f5",
+                "reference": "fb7566caccf22d74d1ab270de3551f72a58399f5",
                 "shasum": ""
             },
             "require": {
                 "ext-json": "*",
-                "guzzlehttp/promises": "^1.5",
+                "guzzlehttp/promises": "^1.5.3 || ^2.0",
                 "guzzlehttp/psr7": "^1.9.1 || ^2.4.5",
                 "php": "^7.2.5 || ^8.0",
                 "psr/http-client": "^1.0",
@@ -34,7 +34,8 @@
             "require-dev": {
                 "bamarni/composer-bin-plugin": "^1.8.1",
                 "ext-curl": "*",
-                "php-http/client-integration-tests": "^3.0",
+                "php-http/client-integration-tests": "dev-master#2c025848417c1135031fdf9c728ee53d0a7ceaee as 3.0.999",
+                "php-http/message-factory": "^1.1",
                 "phpunit/phpunit": "^8.5.29 || ^9.5.23",
                 "psr/log": "^1.1 || ^2.0 || ^3.0"
             },
@@ -113,7 +114,7 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/guzzle/issues",
-                "source": "https://github.com/guzzle/guzzle/tree/7.6.1"
+                "source": "https://github.com/guzzle/guzzle/tree/7.7.0"
             },
             "funding": [
                 {
@@ -129,33 +130,37 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-05-15T20:43:01+00:00"
+            "time": "2023-05-21T14:04:53+00:00"
         },
         {
             "name": "guzzlehttp/promises",
-            "version": "1.5.3",
+            "version": "2.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/promises.git",
-                "reference": "67ab6e18aaa14d753cc148911d273f6e6cb6721e"
+                "reference": "3a494dc7dc1d7d12e511890177ae2d0e6c107da6"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/promises/zipball/67ab6e18aaa14d753cc148911d273f6e6cb6721e",
-                "reference": "67ab6e18aaa14d753cc148911d273f6e6cb6721e",
+                "url": "https://api.github.com/repos/guzzle/promises/zipball/3a494dc7dc1d7d12e511890177ae2d0e6c107da6",
+                "reference": "3a494dc7dc1d7d12e511890177ae2d0e6c107da6",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.5"
+                "php": "^7.2.5 || ^8.0"
             },
             "require-dev": {
-                "symfony/phpunit-bridge": "^4.4 || ^5.1"
+                "bamarni/composer-bin-plugin": "^1.8.1",
+                "phpunit/phpunit": "^8.5.29 || ^9.5.23"
             },
             "type": "library",
+            "extra": {
+                "bamarni-bin": {
+                    "bin-links": true,
+                    "forward-command": false
+                }
+            },
             "autoload": {
-                "files": [
-                    "src/functions_include.php"
-                ],
                 "psr-4": {
                     "GuzzleHttp\\Promise\\": "src/"
                 }
@@ -192,7 +197,7 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/promises/issues",
-                "source": "https://github.com/guzzle/promises/tree/1.5.3"
+                "source": "https://github.com/guzzle/promises/tree/2.0.0"
             },
             "funding": [
                 {
@@ -208,7 +213,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-05-21T12:31:43+00:00"
+            "time": "2023-05-21T13:50:22+00:00"
         },
         {
             "name": "guzzlehttp/psr7",