diff --git a/machines/solis/configuration.nix b/machines/solis/configuration.nix
index 14ddf60..7fa49ac 100644
--- a/machines/solis/configuration.nix
+++ b/machines/solis/configuration.nix
@@ -10,6 +10,7 @@
     inputs.home-manager.nixosModules.home-manager
     ./hardware-configuration.nix
     ../common/configuration.nix
+    ../../modules/sleep-at-night.nix
   ];
 
   home-manager = {