diff --git a/oni-core.el b/oni-core.el
index 4f67256..0768e91 100644
--- a/oni-core.el
+++ b/oni-core.el
@@ -4,8 +4,8 @@
 
 ;; Author: Tom Willemse <tom@ryuslash.org>
 ;; Keywords: local
-;; Version: 2021.1123.003634
-;; Package-Requires: (oni-data-dir oni-embrace oni-hydra expand-region multiple-cursors gcmh diminish ws-butler which-key insert-char-preview dashboard mixed-pitch)
+;; Version: 2021.1205.144437
+;; Package-Requires: (oni-data-dir oni-embrace oni-hydra expand-region multiple-cursors gcmh diminish ws-butler which-key insert-char-preview dashboard mixed-pitch ace-window)
 
 ;; This program is free software; you can redistribute it and/or modify
 ;; it under the terms of the GNU General Public License as published by
@@ -219,6 +219,8 @@ _s_: String list"
 (global-set-key (kbd "C-<left>") 'winner-undo)
 (global-set-key (kbd "C-<right>") 'winner-redo)
 
+(global-set-key (kbd "M-o") 'ace-window)
+
 (unless oni-core--recentf-idle-timer
   (setq oni-core--recentf-idle-timer
         (run-with-idle-timer 10 t #'oni-core-recentf-save-list-silently)))