diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ab46643..4a9a677 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,3 +14,4 @@ jobs:
     # Only run cron on the silverstripe account
     if: (github.event_name == 'schedule' && github.repository_owner == 'lekoala') || (github.event_name != 'schedule')
     uses: silverstripe/gha-ci/.github/workflows/ci.yml@v1
+    composer_require_extra: silverstripe/subsites:^3
diff --git a/code/DebugBar.php b/code/DebugBar.php
index 5ff2c24..7aa32a6 100644
--- a/code/DebugBar.php
+++ b/code/DebugBar.php
@@ -18,7 +18,7 @@
 use DebugBar\Bridge\MonologCollector;
 use SilverStripe\Control\HTTPRequest;
 use DebugBar\DebugBar as BaseDebugBar;
-use SilverStripe\Control\Email\Mailer;
+use Symfony\Component\Mailer\MailerInterface;
 use SilverStripe\Core\Injector\Injector;
 use SilverStripe\Core\Config\ConfigLoader;
 use SilverStripe\Core\Config\Configurable;
@@ -208,7 +208,7 @@ public static function initDebugBar()
 
         // Email logging
         if (self::config()->email_collector) {
-            $mailer = Injector::inst()->get(Mailer::class);
+            $mailer = Injector::inst()->get(MailerInterface::class);
             if ($mailer instanceof SwiftMailer) {
                 $swiftInst = $mailer->getSwiftMailer();
                 $debugbar['messages']->aggregate(new SwiftLogCollector($swiftInst));
diff --git a/code/Messages/LogFormatter.php b/code/Messages/LogFormatter.php
index 286a499..6ec56aa 100644
--- a/code/Messages/LogFormatter.php
+++ b/code/Messages/LogFormatter.php
@@ -3,13 +3,14 @@
 namespace LeKoala\DebugBar\Messages;
 
 use Monolog\Formatter\FormatterInterface;
+use Monolog\LogRecord;
 
 /**
  * Formats incoming log messages for display in the debug bar
  */
 class LogFormatter implements FormatterInterface
 {
-    public function format(array $record)
+    public function format(array|LogRecord $record)
     {
         return $record['message'];
     }
diff --git a/composer.json b/composer.json
index 8923894..59b6e85 100644
--- a/composer.json
+++ b/composer.json
@@ -16,17 +16,17 @@
         }
     ],
     "require": {
-        "php": "^7.4 || ^8.0",
-        "silverstripe/framework": "^4.0",
-        "maximebf/debugbar": "^1.13",
+        "php": "^8.1",
+        "silverstripe/framework": "^5",
+        "maximebf/debugbar": "^1.18",
         "jdorn/sql-formatter": "1.3.x-dev",
-        "tractorcow/silverstripe-proxy-db": "^1.0"
+        "silverstripe/silverstripe-proxy-db": "^2"
     },
     "require-dev": {
-        "silverstripe/siteconfig": "^4.0",
-        "silverstripe/admin": "^1.0",
+        "silverstripe/siteconfig": "^5",
+        "silverstripe/admin": "^2",
         "phpunit/phpunit": "^9.5",
-        "squizlabs/php_codesniffer": "^3.5"
+        "squizlabs/php_codesniffer": "^3"
     },
     "extra": {
         "branch-alias": {