diff --git a/libraries/classes/Pdf.php b/libraries/classes/Pdf.php
index 7e4d3d6ba8..77518f35aa 100644
--- a/libraries/classes/Pdf.php
+++ b/libraries/classes/Pdf.php
@@ -130,7 +130,7 @@ class Pdf extends TCPDF
      * @param string $errorMessage the error message
      */
     // phpcs:ignore PSR1.Methods.CamelCapsMethodName.NotCamelCaps
-    public function Error(mixed $errorMessage = ''): void
+    public function Error(mixed $errorMessage = ''): never
     {
         echo Message::error(
             __('Error while creating PDF:') . ' ' . $errorMessage,
diff --git a/libraries/classes/Plugins/Schema/ExportRelationSchema.php b/libraries/classes/Plugins/Schema/ExportRelationSchema.php
index 1e9ea57459..e42692acdb 100644
--- a/libraries/classes/Plugins/Schema/ExportRelationSchema.php
+++ b/libraries/classes/Plugins/Schema/ExportRelationSchema.php
@@ -250,7 +250,7 @@ class ExportRelationSchema
      * @param string $type         Schema Type
      * @param string $errorMessage The error message
      */
-    public static function dieSchema(int $pageNumber, string $type = '', string $errorMessage = ''): void
+    public static function dieSchema(int $pageNumber, string $type = '', string $errorMessage = ''): never
     {
         echo '<p><strong>' , __('SCHEMA ERROR: ') , $type , '</strong></p>' , "\n";
         if (! empty($errorMessage)) {
diff --git a/libraries/classes/ResponseRenderer.php b/libraries/classes/ResponseRenderer.php
index c901f02e31..9e45c67a86 100644
--- a/libraries/classes/ResponseRenderer.php
+++ b/libraries/classes/ResponseRenderer.php
@@ -368,7 +368,7 @@ class ResponseRenderer
     /**
      * Sends an HTML response to the browser
      */
-    public function response(): void
+    public function response(): never
     {
         $this->buffer->stop();
         if ($this->HTML === '') {
diff --git a/libraries/classes/Sql.php b/libraries/classes/Sql.php
index 8898741cf0..532cec051a 100644
--- a/libraries/classes/Sql.php
+++ b/libraries/classes/Sql.php
@@ -486,7 +486,7 @@ class Sql
      * @param string $error        error after executing the query
      * @param string $fullSqlQuery full sql query
      */
-    private function handleQueryExecuteError(bool $isGotoFile, string $error, string $fullSqlQuery): void
+    private function handleQueryExecuteError(bool $isGotoFile, string $error, string $fullSqlQuery): never
     {
         if ($isGotoFile) {
             $message = Message::rawError($error);
diff --git a/libraries/classes/UrlRedirector.php b/libraries/classes/UrlRedirector.php
index cb89199a25..21c87bc5c6 100644
--- a/libraries/classes/UrlRedirector.php
+++ b/libraries/classes/UrlRedirector.php
@@ -12,8 +12,7 @@ use function preg_match;
  */
 final class UrlRedirector
 {
-    /** @psalm-return never */
-    public static function redirect(string $url): void
+    public static function redirect(string $url): never
     {
         // Load database service because services.php is not available here
         $GLOBALS['dbi'] = DatabaseInterface::load();