diff --git a/modules/nixos/hardware/default.nix b/modules/nixos/hardware/default.nix
index 6d3f9f0..1353ec9 100644
--- a/modules/nixos/hardware/default.nix
+++ b/modules/nixos/hardware/default.nix
@@ -3,6 +3,7 @@
   imports = [
     ./audio.nix
     ./boot.nix
+    ./disk.nix
     ./keyboard.nix
     ./monitors.nix
     ./mouse.nix
diff --git a/modules/nixos/hardware/disk.nix b/modules/nixos/hardware/disk.nix
new file mode 100644
index 0000000..079823d
--- /dev/null
+++ b/modules/nixos/hardware/disk.nix
@@ -0,0 +1,7 @@
+{ config, pkgs, lib, ... }: {
+
+  # Enable fstrim, which tracks free space on SSDs for garbage collection
+  # More info: https://www.reddit.com/r/NixOS/comments/rbzhb1/if_you_have_a_ssd_dont_forget_to_enable_fstrim/
+  services.fstrim.enable = true;
+
+}