diff --git a/.tmux.conf b/.tmux.conf
index d4de022..6a3c4da 100644
--- a/.tmux.conf
+++ b/.tmux.conf
@@ -134,4 +134,10 @@ bind m command-prompt -p "man page:" "split-window -h 'exec man %%'"
 bind M command-prompt -p "Man page:" "new-window -n 'man %1' 'exec man %1'"
 
 # Double tapping the prefix jumps to last window
-bind-key C-b last-window
\ No newline at end of file
+bind-key C-b last-window
+
+##########################################
+### special settings for MacOS
+##########################################
+# url: https://github.com/ChrisJohnsen/tmux-MacOSX-pasteboard
+set-option -g default-command "reattach-to-user-namespace -l bash"