diff --git a/.tmux.conf b/.tmux.conf
index ddf866c..98a1a94 100644
--- a/.tmux.conf
+++ b/.tmux.conf
@@ -121,6 +121,9 @@ bind -t vi-copy Escape cancel
 bind -t vi-copy H start-of-line
 bind -t vi-copy L end-of-line
 
+# copy to Mac OSX pasteboard
+if 'type -p reattach-to-user-namespace' 'bind y run "tmux save-buffer - | reattach-to-user-namespace pbcopy"'
+
 
 # -- user defined --------------------------------------------------------------