diff --git a/extend/catcher/library/excel/ExcelContract.php b/extend/catcher/library/excel/ExcelContract.php
index 28e902b..d3d4141 100644
--- a/extend/catcher/library/excel/ExcelContract.php
+++ b/extend/catcher/library/excel/ExcelContract.php
@@ -5,7 +5,5 @@ interface ExcelContract
 {
     public function headers(): array;
 
-    public function keys(): array ;
-
     public function sheets();
 }
\ No newline at end of file