diff --git a/tmux/tmux.conf b/tmux/tmux.conf
index 38b77764..8ab3ea1a 100644
--- a/tmux/tmux.conf
+++ b/tmux/tmux.conf
@@ -27,7 +27,12 @@ bind -n C-h if-shell "$is_vim" "send-keys C-h" "select-pane -L"
 bind -n C-j if-shell "$is_vim" "send-keys C-j" "select-pane -D"
 bind -n C-k if-shell "$is_vim" "send-keys C-k" "select-pane -U"
 bind -n C-l if-shell "$is_vim" "send-keys C-l" "select-pane -R"
-bind -n C-\ if-shell "$is_vim" "send-keys C-\\" "select-pane -l"
+
+tmux_version='$(tmux -V | sed -En "s/^tmux ([0-9]+(.[0-9]+)?).*/\1/p")'
+if-shell -b '[ "$(echo "$tmux_version < 3.0" | bc)" = 1 ]' \
+    "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\'  'select-pane -l'"
+if-shell -b '[ "$(echo "$tmux_version >= 3.0" | bc)" = 1 ]' \
+    "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\\\'  'select-pane -l'"
 
 # Use vi keybindings for tmux commandline input.
 # Note that to get command mode you need to hit ESC twice...