diff --git a/flake.nix b/flake.nix
index aef1444c..5ebed9d5 100644
--- a/flake.nix
+++ b/flake.nix
@@ -211,7 +211,7 @@
             ref = "main";
             rev = "012d29d4b4d7148414bb649c39805479c7a4327b";
           };
-          tiny-dfr = import ./nixos/tiny-dfr.nix { inherit pkgs; };
+          tiny-dfr = import ./nixos/tiny-dfr.nix { pkgs = pkgs-unstable; };
         in
           nixpkgs.lib.nixosSystem {
             inherit system;
diff --git a/nixos/tiny-dfr.nix b/nixos/tiny-dfr.nix
index ee1fe92f..3f124cd6 100644
--- a/nixos/tiny-dfr.nix
+++ b/nixos/tiny-dfr.nix
@@ -1,13 +1,16 @@
 {
   pkgs,
   tiny-dfr ? pkgs.tiny-dfr
-}: {
+}:
+  assert tiny-dfr.version == "0.3.1";
+{
   services.udev.packages = [ tiny-dfr ];
   systemd.services.tiny-dfr = {
     enable = true;
-    description = "tinydfr";
-    after = ["systemd-user-sessions.service" "getty@tty1.service" "plymouth-quit.service" "systemd-logind.service"];
+    description = "tiny-dfr";
+    after = ["systemd-user-sessions.service" "getty@tty1.service" "plymouth-quit.service" "systemd-logind.service" "dev-tiny_dfr_display.device" "dev-tiny_dfr_backlight.device" "dev-tiny_dfr_display_backlight.device"];
     wantedBy = ["multi-user.target"];
+    bindsTo = ["dev-tiny_dfr_display.device" "dev-tiny_dfr_backlight.device" "dev-tiny_dfr_display_backlight.device"];
     startLimitIntervalSec = 30;
     startLimitBurst = 2;
     serviceConfig = {