diff --git a/composer.lock b/composer.lock
index ea342ff..8547bf3 100644
--- a/composer.lock
+++ b/composer.lock
@@ -478,32 +478,32 @@
         },
         {
             "name": "react/promise",
-            "version": "v2.8.0",
+            "version": "v2.9.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/reactphp/promise.git",
-                "reference": "f3cff96a19736714524ca0dd1d4130de73dbbbc4"
+                "reference": "234f8fd1023c9158e2314fa9d7d0e6a83db42910"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/reactphp/promise/zipball/f3cff96a19736714524ca0dd1d4130de73dbbbc4",
-                "reference": "f3cff96a19736714524ca0dd1d4130de73dbbbc4",
+                "url": "https://api.github.com/repos/reactphp/promise/zipball/234f8fd1023c9158e2314fa9d7d0e6a83db42910",
+                "reference": "234f8fd1023c9158e2314fa9d7d0e6a83db42910",
                 "shasum": ""
             },
             "require": {
                 "php": ">=5.4.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "^7.0 || ^6.5 || ^5.7 || ^4.8.36"
+                "phpunit/phpunit": "^9.3 || ^5.7 || ^4.8.36"
             },
             "type": "library",
             "autoload": {
-                "psr-4": {
-                    "React\\Promise\\": "src/"
-                },
                 "files": [
                     "src/functions_include.php"
-                ]
+                ],
+                "psr-4": {
+                    "React\\Promise\\": "src/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -512,7 +512,23 @@
             "authors": [
                 {
                     "name": "Jan Sorgalla",
-                    "email": "jsorgalla@gmail.com"
+                    "email": "jsorgalla@gmail.com",
+                    "homepage": "https://sorgalla.com/"
+                },
+                {
+                    "name": "Christian Lück",
+                    "email": "christian@clue.engineering",
+                    "homepage": "https://clue.engineering/"
+                },
+                {
+                    "name": "Cees-Jan Kiewiet",
+                    "email": "reactphp@ceesjankiewiet.nl",
+                    "homepage": "https://wyrihaximus.net/"
+                },
+                {
+                    "name": "Chris Boden",
+                    "email": "cboden@gmail.com",
+                    "homepage": "https://cboden.dev/"
                 }
             ],
             "description": "A lightweight implementation of CommonJS Promises/A for PHP",
@@ -520,7 +536,21 @@
                 "promise",
                 "promises"
             ],
-            "time": "2020-05-12T15:16:56+00:00"
+            "support": {
+                "issues": "https://github.com/reactphp/promise/issues",
+                "source": "https://github.com/reactphp/promise/tree/v2.9.0"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/WyriHaximus",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/clue",
+                    "type": "github"
+                }
+            ],
+            "time": "2022-02-11T10:27:51+00:00"
         },
         {
             "name": "slim/psr7",