diff --git a/src/Goodby/CSV/Export/Standard/CsvFileObject.php b/src/Goodby/CSV/Export/Standard/CsvFileObject.php
index da3f4d3..7fcddab 100644
--- a/src/Goodby/CSV/Export/Standard/CsvFileObject.php
+++ b/src/Goodby/CSV/Export/Standard/CsvFileObject.php
@@ -47,7 +47,8 @@ public function setCsvFilter($filter)
      * @param useless  $escape  THIS PARAM IS UNSED, BUT REQUIRED EXISTS, see https://bugs.php.net/bug.php?id=68479 and https://github.com/goodby/csv/issues/56
      * @return int|void
      */
-    public function fputcsv($fields, $delimiter = null, $enclosure = null, $escape = null)
+    #[ReturnTypeWillChange]
+    public function fputcsv($fields, $delimiter = null, $enclosure = null, $escape = null, $eol = null)
     {
         // Temporary output a line to memory to get line as string
         $fp = fopen('php://temp', 'w+');