diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index a656dbd0521..8f89ad8cf61 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -55,6 +55,7 @@ updates:
     - "/vendor-bin/mozart"
     - "/vendor-bin/phpunit"
     - "/vendor-bin/psalm"
+    - "/vendor-bin/rector"
   commit-message:
     prefix: "ci"
     include: "scope"
diff --git a/composer.json b/composer.json
index f86d5406fa1..e7a30fc1cbf 100644
--- a/composer.json
+++ b/composer.json
@@ -20,6 +20,8 @@
 		"cs:fix": "php-cs-fixer fix",
 		"lint": "find . -name \\*.php -not -path './vendor/*' -not -path './vendor-bin/*' -not -path './lib/Vendor/*' -not -path './build/*' -not -path './tests/integration/vendor/*' -print0 | xargs -0 -n1 php -l",
 		"openapi": "generate-spec --verbose && (npm run typescript:generate || echo 'Please manually regenerate the typescript OpenAPI models')",
+		"rector:check": "rector --dry-run",
+		"rector:fix": "rector",
 		"psalm": "psalm --threads=1",
 		"psalm:dev": "psalm --no-cache --threads=$(nproc)",
 		"psalm:update-baseline": "psalm --threads=1 --update-baseline --set-baseline=tests/psalm-baseline.xml",
diff --git a/rector.php b/rector.php
new file mode 100644
index 00000000000..cc8f5a31c8a
--- /dev/null
+++ b/rector.php
@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+use Nextcloud\Rector\Set\NextcloudSets;
+use Rector\Config\RectorConfig;
+
+return RectorConfig::configure()
+	->withPaths([
+		__DIR__ . '/appinfo',
+		__DIR__ . '/lib',
+		__DIR__ . '/templates',
+		__DIR__ . '/tests/php',
+	])
+	->withSkipPath(__DIR__ . '/lib/Vendor')
+	->withPhpSets(php73: true)
+	->withSets([
+		NextcloudSets::NEXTCLOUD_27,
+	])
+	->withTypeCoverageLevel(0);
diff --git a/templates/index.php b/templates/index.php
index 166a634b487..4a557e8f9f6 100644
--- a/templates/index.php
+++ b/templates/index.php
@@ -6,5 +6,5 @@
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
-script('spreed', 'talk-main');
+\OCP\Util::addScript('spreed', 'talk-main');
 style('spreed', 'icons');
diff --git a/templates/recording.php b/templates/recording.php
index bf00762259e..cc0a1a71f3d 100644
--- a/templates/recording.php
+++ b/templates/recording.php
@@ -6,5 +6,5 @@
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
-script('spreed', 'talk-recording');
+\OCP\Util::addScript('spreed', 'talk-recording');
 style('spreed', 'icons');
diff --git a/vendor-bin/rector/composer.json b/vendor-bin/rector/composer.json
new file mode 100644
index 00000000000..161da175378
--- /dev/null
+++ b/vendor-bin/rector/composer.json
@@ -0,0 +1,6 @@
+{
+    "require-dev": {
+        "rector/rector": "^1.2.0",
+        "nextcloud/rector": "^0.2.1"
+    }
+}
diff --git a/vendor-bin/rector/composer.lock b/vendor-bin/rector/composer.lock
new file mode 100644
index 00000000000..34a7b3f7763
--- /dev/null
+++ b/vendor-bin/rector/composer.lock
@@ -0,0 +1,198 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
+        "This file is @generated automatically"
+    ],
+    "content-hash": "70a6b9ee5d177a2650153d88a8a02362",
+    "packages": [],
+    "packages-dev": [
+        {
+            "name": "nextcloud/rector",
+            "version": "v0.2.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/nextcloud-libraries/rector.git",
+                "reference": "d73ab086700564f675eda9a834b6b08410a1da7e"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/nextcloud-libraries/rector/zipball/d73ab086700564f675eda9a834b6b08410a1da7e",
+                "reference": "d73ab086700564f675eda9a834b6b08410a1da7e",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^8.1"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^10.5",
+                "ramsey/devtools": "^2.0",
+                "rector/rector": "^1.2"
+            },
+            "type": "library",
+            "extra": {
+                "captainhook": {
+                    "force-install": true
+                },
+                "ramsey/conventional-commits": {
+                    "configFile": "conventional-commits.json"
+                },
+                "ramsey/devtools": {
+                    "command-prefix": "dev",
+                    "memory-limit": "-1"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Nextcloud\\Rector\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "AGPL-3.0-or-later"
+            ],
+            "authors": [
+                {
+                    "name": "Christoph Wurst",
+                    "email": "christoph@winzerhof-wurst.at",
+                    "homepage": "https://wuc.me"
+                }
+            ],
+            "description": "Rector upgrade rules for Nextcloud",
+            "keywords": [
+                "nextcloud",
+                "refactoring"
+            ],
+            "support": {
+                "issues": "https://github.com/nextcloud-libraries/rector/issues",
+                "source": "https://github.com/nextcloud-libraries/rector/tree/v0.2.1"
+            },
+            "time": "2024-10-01T12:24:08+00:00"
+        },
+        {
+            "name": "phpstan/phpstan",
+            "version": "1.12.6",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpstan/phpstan.git",
+                "reference": "dc4d2f145a88ea7141ae698effd64d9df46527ae"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/dc4d2f145a88ea7141ae698effd64d9df46527ae",
+                "reference": "dc4d2f145a88ea7141ae698effd64d9df46527ae",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2|^8.0"
+            },
+            "conflict": {
+                "phpstan/phpstan-shim": "*"
+            },
+            "bin": [
+                "phpstan",
+                "phpstan.phar"
+            ],
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "PHPStan - PHP Static Analysis Tool",
+            "keywords": [
+                "dev",
+                "static analysis"
+            ],
+            "support": {
+                "docs": "https://phpstan.org/user-guide/getting-started",
+                "forum": "https://github.com/phpstan/phpstan/discussions",
+                "issues": "https://github.com/phpstan/phpstan/issues",
+                "security": "https://github.com/phpstan/phpstan/security/policy",
+                "source": "https://github.com/phpstan/phpstan-src"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/ondrejmirtes",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/phpstan",
+                    "type": "github"
+                }
+            ],
+            "time": "2024-10-06T15:03:59+00:00"
+        },
+        {
+            "name": "rector/rector",
+            "version": "1.2.6",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/rectorphp/rector.git",
+                "reference": "6ca85da28159dbd3bb36211c5104b7bc91278e99"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/rectorphp/rector/zipball/6ca85da28159dbd3bb36211c5104b7bc91278e99",
+                "reference": "6ca85da28159dbd3bb36211c5104b7bc91278e99",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2|^8.0",
+                "phpstan/phpstan": "^1.12.5"
+            },
+            "conflict": {
+                "rector/rector-doctrine": "*",
+                "rector/rector-downgrade-php": "*",
+                "rector/rector-phpunit": "*",
+                "rector/rector-symfony": "*"
+            },
+            "suggest": {
+                "ext-dom": "To manipulate phpunit.xml via the custom-rule command"
+            },
+            "bin": [
+                "bin/rector"
+            ],
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "Instant Upgrade and Automated Refactoring of any PHP code",
+            "keywords": [
+                "automation",
+                "dev",
+                "migration",
+                "refactoring"
+            ],
+            "support": {
+                "issues": "https://github.com/rectorphp/rector/issues",
+                "source": "https://github.com/rectorphp/rector/tree/1.2.6"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/tomasvotruba",
+                    "type": "github"
+                }
+            ],
+            "time": "2024-10-03T08:56:44+00:00"
+        }
+    ],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": [],
+    "plugin-api-version": "2.6.0"
+}