diff --git a/CHANGELOG.md b/CHANGELOG.md
index a8a10bef0..63a94ef17 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 # Change Log
 All notable changes to this project will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org)
 
+## 2.6.2 2021-10-18
+
+### Changed
+- Updated `self:update` command to support new options from upstream library (#2223)
+
 ## 2.6.1 - 2021-08-04
 
 ### Fixed
diff --git a/composer.lock b/composer.lock
index 83d25788e..8a6d48815 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1099,16 +1099,16 @@
         },
         {
             "name": "guzzlehttp/promises",
-            "version": "1.4.1",
+            "version": "1.5.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/promises.git",
-                "reference": "8e7d04f1f6450fef59366c399cfad4b9383aa30d"
+                "reference": "136a635e2b4a49b9d79e9c8fee267ffb257fdba0"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/promises/zipball/8e7d04f1f6450fef59366c399cfad4b9383aa30d",
-                "reference": "8e7d04f1f6450fef59366c399cfad4b9383aa30d",
+                "url": "https://api.github.com/repos/guzzle/promises/zipball/136a635e2b4a49b9d79e9c8fee267ffb257fdba0",
+                "reference": "136a635e2b4a49b9d79e9c8fee267ffb257fdba0",
                 "shasum": ""
             },
             "require": {
@@ -1120,7 +1120,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.4-dev"
+                    "dev-master": "1.5-dev"
                 }
             },
             "autoload": {
@@ -1136,10 +1136,25 @@
                 "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": "Tobias Nyholm",
+                    "email": "tobias.nyholm@gmail.com",
+                    "homepage": "https://github.com/Nyholm"
+                },
+                {
+                    "name": "Tobias Schultze",
+                    "email": "webmaster@tubo-world.de",
+                    "homepage": "https://github.com/Tobion"
                 }
             ],
             "description": "Guzzle promises library",
@@ -1148,22 +1163,36 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/promises/issues",
-                "source": "https://github.com/guzzle/promises/tree/1.4.1"
+                "source": "https://github.com/guzzle/promises/tree/1.5.0"
             },
-            "time": "2021-03-07T09:25:29+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/promises",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2021-10-07T13:05:22+00:00"
         },
         {
             "name": "guzzlehttp/psr7",
-            "version": "1.8.2",
+            "version": "1.8.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/psr7.git",
-                "reference": "dc960a912984efb74d0a90222870c72c87f10c91"
+                "reference": "1afdd860a2566ed3c2b0b4a3de6e23434a79ec85"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/psr7/zipball/dc960a912984efb74d0a90222870c72c87f10c91",
-                "reference": "dc960a912984efb74d0a90222870c72c87f10c91",
+                "url": "https://api.github.com/repos/guzzle/psr7/zipball/1afdd860a2566ed3c2b0b4a3de6e23434a79ec85",
+                "reference": "1afdd860a2566ed3c2b0b4a3de6e23434a79ec85",
                 "shasum": ""
             },
             "require": {
@@ -1200,13 +1229,34 @@
                 "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": "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"
                 }
             ],
@@ -1223,9 +1273,23 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/psr7/issues",
-                "source": "https://github.com/guzzle/psr7/tree/1.8.2"
+                "source": "https://github.com/guzzle/psr7/tree/1.8.3"
             },
-            "time": "2021-04-26T09:17:50+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/psr7",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2021-10-05T13:56:00+00:00"
         },
         {
             "name": "jakub-onderka/php-console-color",
@@ -4324,16 +4388,16 @@
         },
         {
             "name": "squizlabs/php_codesniffer",
-            "version": "3.6.0",
+            "version": "3.6.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/squizlabs/PHP_CodeSniffer.git",
-                "reference": "ffced0d2c8fa8e6cdc4d695a743271fab6c38625"
+                "reference": "f268ca40d54617c6e06757f83f699775c9b3ff2e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/squizlabs/PHP_CodeSniffer/zipball/ffced0d2c8fa8e6cdc4d695a743271fab6c38625",
-                "reference": "ffced0d2c8fa8e6cdc4d695a743271fab6c38625",
+                "url": "https://api.github.com/repos/squizlabs/PHP_CodeSniffer/zipball/f268ca40d54617c6e06757f83f699775c9b3ff2e",
+                "reference": "f268ca40d54617c6e06757f83f699775c9b3ff2e",
                 "shasum": ""
             },
             "require": {
@@ -4376,7 +4440,7 @@
                 "source": "https://github.com/squizlabs/PHP_CodeSniffer",
                 "wiki": "https://github.com/squizlabs/PHP_CodeSniffer/wiki"
             },
-            "time": "2021-04-09T00:54:41+00:00"
+            "time": "2021-10-11T04:00:11+00:00"
         },
         {
             "name": "symfony/config",
diff --git a/config/constants.yml b/config/constants.yml
index 67f58e72e..69c09647d 100644
--- a/config/constants.yml
+++ b/config/constants.yml
@@ -7,7 +7,7 @@
 ---
 
 # App
-TERMINUS_VERSION: '2.6.1'
+TERMINUS_VERSION: '2.6.2'
 
 # Connectivity
 TERMINUS_HOST:      'terminus.pantheon.io'