diff --git a/share/common.nix b/share/common.nix
index 3ce40f2..427e036 100644
--- a/share/common.nix
+++ b/share/common.nix
@@ -226,6 +226,12 @@ in
     allowReboot = false;
   };
 
+  # trim the disks weekly
+  services.fstrim = {
+    enable = true;
+    interval = "weekly";
+  };
+
   # avoid suspend ever to be triggered
   systemd.targets.sleep.enable = false;
   systemd.targets.suspend.enable = false;