diff --git a/lisp/emacs-lisp/map.el b/lisp/emacs-lisp/map.el
index 6e2ab0f950f..7ec5b396252 100644
--- a/lisp/emacs-lisp/map.el
+++ b/lisp/emacs-lisp/map.el
@@ -5,6 +5,7 @@
 ;; Author: Nicolas Petton <nicolas@petton.fr>
 ;; Keywords: convenience, map, hash-table, alist, array
 ;; Version: 1.2
+;; Package-Requires: ((emacs "25"))
 ;; Package: map
 
 ;; Maintainer: emacs-devel@gnu.org