diff --git a/tmux.conf b/tmux.conf
index cbc91d2..f053e31 100644
--- a/tmux.conf
+++ b/tmux.conf
@@ -53,4 +53,8 @@ setw -g alternate-screen on
 
 setw -g clock-mode-style 24
 
+# Lock the screen after 120 seconds
+set-option -g lock-after-time 120 
+set-option -g lock-command "tmux clock-mode"
+
 bind-key C-a last-window