diff --git a/.config/linux/system/module/common/Dotfiles.nix b/.config/linux/system/module/common/Dotfiles.nix
index dcd569d..7770f7b 100644
--- a/.config/linux/system/module/common/Dotfiles.nix
+++ b/.config/linux/system/module/common/Dotfiles.nix
@@ -28,9 +28,23 @@
 			${pkgs.git}/bin/git pull
 		'';
 	};
+	timer = {
+		timerConfig = {
+			OnCalendar = "daily";
+			Unit       = "dotfiles.service";
+		};
+		wantedBy = [ "timers.target" ];
+	};
 	dotsSource = inputs.dotfiles;
 in {
+	# Service.
 	systemd.user.services.dotfiles  = unit;
 	systemd.services.dotfiles       = unit;
+
+	# Sync timer.
+	systemd.timers.dotfiles      = timer;
+	systemd.user.timers.dotfiles = timer;
+
+	# Link copy to /etc/dotfiles
 	environment.etc.dotfiles.source = dotsSource;
 }