diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d365c206..9112e53e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -5,8 +5,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: ["8.1", "8.2"]
-        typo3: ["12.4"]
+        php: ["8.1", "8.2", "8.3"]
+        typo3: ["12.4", "13.4"]
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
diff --git a/ext_localconf.php b/ext_localconf.php
index f19693e7..e11ab021 100644
--- a/ext_localconf.php
+++ b/ext_localconf.php
@@ -188,7 +188,7 @@
         'priority' => 40,
         'class' => CalendarizeInfoElement::class,
     ];
-    
+
     if (GeneralUtility::makeInstance(Typo3Version::class)->getMajorVersion() <= 12) {
         // Include new content elements to modWizards
         ExtensionManagementUtility::addPageTSConfig('