diff --git a/composer.lock b/composer.lock
index e63f755975d..161b8e51cdf 100644
--- a/composer.lock
+++ b/composer.lock
@@ -534,7 +534,7 @@
             "dist": {
                 "type": "path",
                 "url": "core",
-                "reference": "107b1d4f65408eb2844facd227005517de15343b"
+                "reference": "dd16302911e953e2f27bacfb848a3233757b4b97"
             },
             "require": {
                 "asm89/stack-cors": "^1.1",
@@ -555,7 +555,7 @@
                 "ext-spl": "*",
                 "ext-tokenizer": "*",
                 "ext-xml": "*",
-                "guzzlehttp/guzzle": "^6.5.2",
+                "guzzlehttp/guzzle": "^6.5.6",
                 "laminas/laminas-diactoros": "^2.1",
                 "laminas/laminas-feed": "^2.12",
                 "masterminds/html5": "^2.1",
@@ -918,16 +918,16 @@
         },
         {
             "name": "guzzlehttp/guzzle",
-            "version": "6.5.5",
+            "version": "6.5.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/guzzle.git",
-                "reference": "9d4290de1cfd701f38099ef7e183b64b4b7b0c5e"
+                "reference": "f092dd734083473658de3ee4bef093ed77d2689c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/9d4290de1cfd701f38099ef7e183b64b4b7b0c5e",
-                "reference": "9d4290de1cfd701f38099ef7e183b64b4b7b0c5e",
+                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/f092dd734083473658de3ee4bef093ed77d2689c",
+                "reference": "f092dd734083473658de3ee4bef093ed77d2689c",
                 "shasum": ""
             },
             "require": {
@@ -952,22 +952,52 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "GuzzleHttp\\": "src/"
-                },
                 "files": [
                     "src/functions_include.php"
-                ]
+                ],
+                "psr-4": {
+                    "GuzzleHttp\\": "src/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "MIT"
             ],
             "authors": [
+                {
+                    "name": "Graham Campbell",
+                    "email": "hello@gjcampbell.co.uk",
+                    "homepage": "https://github.com/GrahamCampbell"
+                },
                 {
                     "name": "Michael Dowling",
                     "email": "mtdowling@gmail.com",
                     "homepage": "https://github.com/mtdowling"
+                },
+                {
+                    "name": "Jeremy Lindblom",
+                    "email": "jeremeamia@gmail.com",
+                    "homepage": "https://github.com/jeremeamia"
+                },
+                {
+                    "name": "George Mponos",
+                    "email": "gmponos@gmail.com",
+                    "homepage": "https://github.com/gmponos"
+                },
+                {
+                    "name": "Tobias Nyholm",
+                    "email": "tobias.nyholm@gmail.com",
+                    "homepage": "https://github.com/Nyholm"
+                },
+                {
+                    "name": "Márk Sági-Kazár",
+                    "email": "mark.sagikazar@gmail.com",
+                    "homepage": "https://github.com/sagikazarmark"
+                },
+                {
+                    "name": "Tobias Schultze",
+                    "email": "webmaster@tubo-world.de",
+                    "homepage": "https://github.com/Tobion"
                 }
             ],
             "description": "Guzzle is a PHP HTTP client library",
@@ -983,9 +1013,23 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/guzzle/issues",
-                "source": "https://github.com/guzzle/guzzle/tree/6.5"
+                "source": "https://github.com/guzzle/guzzle/tree/6.5.6"
             },
-            "time": "2020-06-16T21:01:06+00:00"
+            "funding": [
+                {
+                    "url": "https://github.com/GrahamCampbell",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/Nyholm",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/guzzlehttp/guzzle",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2022-05-25T13:19:12+00:00"
         },
         {
             "name": "guzzlehttp/promises",
diff --git a/composer/Metapackage/CoreRecommended/composer.json b/composer/Metapackage/CoreRecommended/composer.json
index 2bfc3a23a7c..c747c9ed78b 100644
--- a/composer/Metapackage/CoreRecommended/composer.json
+++ b/composer/Metapackage/CoreRecommended/composer.json
@@ -14,7 +14,7 @@
         "doctrine/lexer": "1.2.1",
         "doctrine/reflection": "1.2.2",
         "egulias/email-validator": "2.1.25",
-        "guzzlehttp/guzzle": "6.5.5",
+        "guzzlehttp/guzzle": "6.5.6",
         "guzzlehttp/promises": "1.4.1",
         "guzzlehttp/psr7": "1.8.5",
         "laminas/laminas-diactoros": "2.6.0",
diff --git a/core/composer.json b/core/composer.json
index 17365aabdb0..53acc32854c 100644
--- a/core/composer.json
+++ b/core/composer.json
@@ -35,7 +35,7 @@
         "twig/twig": "^2.12.0",
         "doctrine/reflection": "^1.1",
         "doctrine/annotations": "^1.12",
-        "guzzlehttp/guzzle": "^6.5.2",
+        "guzzlehttp/guzzle": "^6.5.6",
         "symfony-cmf/routing": "^2.1",
         "laminas/laminas-feed": "^2.12",
         "stack/builder": "^1.0",
diff --git a/core/lib/Drupal.php b/core/lib/Drupal.php
index 50bac52270c..6c39239ff04 100644
--- a/core/lib/Drupal.php
+++ b/core/lib/Drupal.php
@@ -75,7 +75,7 @@ class Drupal {
   /**
    * The current system version.
    */
-  const VERSION = '9.2.20-dev';
+  const VERSION = '9.2.21-dev';
 
   /**
    * Core API compatibility.