diff --git a/projects/plugins/mu-wpcom-plugin/changelog/update-copy-custom-css-to-mu-wpcom#2 b/projects/plugins/mu-wpcom-plugin/changelog/update-copy-custom-css-to-mu-wpcom#2
new file mode 100644
index 0000000000000..9aa70e3ec1f75
--- /dev/null
+++ b/projects/plugins/mu-wpcom-plugin/changelog/update-copy-custom-css-to-mu-wpcom#2
@@ -0,0 +1,5 @@
+Significance: patch
+Type: changed
+Comment: Updated composer.lock.
+
+
diff --git a/projects/plugins/mu-wpcom-plugin/composer.lock b/projects/plugins/mu-wpcom-plugin/composer.lock
index 64f6324cdd02a..ca1053e7c8371 100644
--- a/projects/plugins/mu-wpcom-plugin/composer.lock
+++ b/projects/plugins/mu-wpcom-plugin/composer.lock
@@ -780,7 +780,7 @@
             "dist": {
                 "type": "path",
                 "url": "../../packages/jetpack-mu-wpcom",
-                "reference": "7080bba6447f9bd0815793ded78e5e5fb681be0e"
+                "reference": "e2e15a701703485ceb9b37f1cd919c85ddb3c5b6"
             },
             "require": {
                 "automattic/jetpack-assets": "@dev",
@@ -793,7 +793,8 @@
                 "automattic/jetpack-stats-admin": "@dev",
                 "automattic/jetpack-status": "@dev",
                 "automattic/scheduled-updates": "@dev",
-                "php": ">=7.0"
+                "php": ">=7.0",
+                "scssphp/scssphp": "1.12.0"
             },
             "require-dev": {
                 "automattic/jetpack-changelogger": "@dev",
@@ -1414,6 +1415,86 @@
             "transport-options": {
                 "relative": true
             }
+        },
+        {
+            "name": "scssphp/scssphp",
+            "version": "v1.12.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/scssphp/scssphp.git",
+                "reference": "a6b20c170ddb95f116b3d148a466a7bed1e85c35"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/scssphp/scssphp/zipball/a6b20c170ddb95f116b3d148a466a7bed1e85c35",
+                "reference": "a6b20c170ddb95f116b3d148a466a7bed1e85c35",
+                "shasum": ""
+            },
+            "require": {
+                "ext-ctype": "*",
+                "ext-json": "*",
+                "php": ">=5.6.0"
+            },
+            "require-dev": {
+                "bamarni/composer-bin-plugin": "^1.4",
+                "phpunit/phpunit": "^5.7 || ^6.5 || ^7.5 || ^8.3 || ^9.4",
+                "sass/sass-spec": "*",
+                "squizlabs/php_codesniffer": "~3.5",
+                "symfony/phpunit-bridge": "^5.1",
+                "thoughtbot/bourbon": "^7.0",
+                "twbs/bootstrap": "~5.0",
+                "twbs/bootstrap4": "4.6.1",
+                "zurb/foundation": "~6.7.0"
+            },
+            "suggest": {
+                "ext-iconv": "Can be used as fallback when ext-mbstring is not available",
+                "ext-mbstring": "For best performance, mbstring should be installed as it is faster than ext-iconv"
+            },
+            "bin": [
+                "bin/pscss"
+            ],
+            "type": "library",
+            "extra": {
+                "bamarni-bin": {
+                    "forward-command": false,
+                    "bin-links": false
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "ScssPhp\\ScssPhp\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Anthon Pang",
+                    "email": "apang@softwaredevelopment.ca",
+                    "homepage": "https://github.com/robocoder"
+                },
+                {
+                    "name": "Cédric Morin",
+                    "email": "cedric@yterium.com",
+                    "homepage": "https://github.com/Cerdic"
+                }
+            ],
+            "description": "scssphp is a compiler for SCSS written in PHP.",
+            "homepage": "http://scssphp.github.io/scssphp/",
+            "keywords": [
+                "css",
+                "less",
+                "sass",
+                "scss",
+                "stylesheet"
+            ],
+            "support": {
+                "issues": "https://github.com/scssphp/scssphp/issues",
+                "source": "https://github.com/scssphp/scssphp/tree/v1.12.0"
+            },
+            "time": "2023-11-14T14:56:09+00:00"
         }
     ],
     "packages-dev": [
diff --git a/projects/plugins/wpcomsh/composer.json b/projects/plugins/wpcomsh/composer.json
index 71e16225143b2..e729e7e033923 100644
--- a/projects/plugins/wpcomsh/composer.json
+++ b/projects/plugins/wpcomsh/composer.json
@@ -125,7 +125,7 @@
 			"composer/installers": true,
 			"roots/wordpress-core-installer": true
 		},
-		"autoloader-suffix": "26841ac2064774301cbe06d174833bfc_wpcomshⓥ3_22_6_alpha"
+		"autoloader-suffix": "26841ac2064774301cbe06d174833bfc_wpcomshⓥ3_23_0_alpha"
 	},
 	"extra": {
 		"mirror-repo": "Automattic/wpcom-site-helper",
diff --git a/projects/plugins/wpcomsh/package.json b/projects/plugins/wpcomsh/package.json
index ec2c2200465d4..b004d265af32a 100644
--- a/projects/plugins/wpcomsh/package.json
+++ b/projects/plugins/wpcomsh/package.json
@@ -3,7 +3,7 @@
 	"name": "@automattic/jetpack-wpcomsh",
 	"description": "A helper for connecting WordPress.com sites to external host infrastructure.",
 	"homepage": "https://jetpack.com",
-	"version": "3.22.6-alpha",
+	"version": "3.23.0-alpha",
 	"bugs": {
 		"url": "https://github.com/Automattic/jetpack/labels/[Plugin] Wpcomsh"
 	},
diff --git a/projects/plugins/wpcomsh/wpcomsh.php b/projects/plugins/wpcomsh/wpcomsh.php
index 51c8a8e7c64c2..4980f87d1914a 100644
--- a/projects/plugins/wpcomsh/wpcomsh.php
+++ b/projects/plugins/wpcomsh/wpcomsh.php
@@ -2,7 +2,7 @@
 /**
  * Plugin Name: WordPress.com Site Helper
  * Description: A helper for connecting WordPress.com sites to external host infrastructure.
- * Version: 3.22.6-alpha
+ * Version: 3.23.0-alpha
  * Author: Automattic
  * Author URI: http://automattic.com/
  *
@@ -10,7 +10,7 @@
  */
 
 // Increase version number if you change something in wpcomsh.
-define( 'WPCOMSH_VERSION', '3.22.6-alpha' );
+define( 'WPCOMSH_VERSION', '3.23.0-alpha' );
 
 // If true, Typekit fonts will be available in addition to Google fonts
 add_filter( 'jetpack_fonts_enable_typekit', '__return_true' );