diff --git a/tmux/.config/tmux/tmux.conf b/tmux/.config/tmux/tmux.conf
index 62d7a30..4071d9b 100644
--- a/tmux/.config/tmux/tmux.conf
+++ b/tmux/.config/tmux/tmux.conf
@@ -23,5 +23,8 @@ bind l select-pane -R
 # Terminal appearance
 set -g default-terminal "xterm-256color"
 
+# Explicitly set vi key bindings
+set-window-option -g mode-keys vi
+
 # Keep this line at the very bottom
 run '~/.config/tmux/plugins/tpm/tpm'