diff --git a/src/Monolog/Formatter/GoogleCloudLoggingFormatter.php b/src/Monolog/Formatter/GoogleCloudLoggingFormatter.php
index ea555d4d..c97b9122 100644
--- a/src/Monolog/Formatter/GoogleCloudLoggingFormatter.php
+++ b/src/Monolog/Formatter/GoogleCloudLoggingFormatter.php
@@ -22,7 +22,7 @@ use Monolog\LogRecord;
  *
  * @author Luís Cobucci <lcobucci@gmail.com>
  */
-final class GoogleCloudLoggingFormatter extends JsonFormatter
+class GoogleCloudLoggingFormatter extends JsonFormatter
 {
     protected function normalizeRecord(LogRecord $record): array
     {