diff --git a/dot_tmux.conf b/dot_tmux.conf
new file mode 100644
index 0000000..265521d
--- /dev/null
+++ b/dot_tmux.conf
@@ -0,0 +1,4 @@
+#set -g default-terminal screen-256color
+set-option -g update-environment "SSH_AUTH_SOCK \
+                                  SSH_CONNECTION \
+                                  DISPLAY"