diff --git a/hosts/ni/hardware-configuration.nix b/hosts/ni/hardware-configuration.nix
index c2650f0e..40c2b704 100644
--- a/hosts/ni/hardware-configuration.nix
+++ b/hosts/ni/hardware-configuration.nix
@@ -55,4 +55,7 @@
       splix
     ];
   };
+
+  # Extend the life of an SSD.
+  services.fstrim.enable = true;
 }