diff --git a/home-manager/i3.nix b/home-manager/i3.nix
index d4d7b7d..de8cf5c 100644
--- a/home-manager/i3.nix
+++ b/home-manager/i3.nix
@@ -15,6 +15,18 @@
     settings.General.showStartupLaunchMessage = false;
   };
 
+  services.xidlehook = {
+    enable = true;
+    not-when-audio = true;
+    #not-when-fullscreen = true;
+    timers = [
+      {
+        delay = 300;
+        command = "dm-tool lock";
+      }
+    ];
+  };
+
   programs.mpv.enable = true;
   programs.firefox.enable = true;
   programs.chromium.enable = true;