diff --git a/flake.lock b/flake.lock
index c709aec..2db332a 100644
--- a/flake.lock
+++ b/flake.lock
@@ -73,19 +73,19 @@
         "type": "github"
       }
     },
-    "nixpkgs-master": {
+    "nixpkgs-btrbk": {
       "locked": {
-        "lastModified": 1735418999,
-        "narHash": "sha256-nFnQAzDqYhPsAdrcFRZMSnH0Tuj0gjKhSAJAep08Szc=",
-        "owner": "nixos",
+        "lastModified": 1735587871,
+        "narHash": "sha256-BXVJ4yIrBPJgReaQi3IdFvRhVg4wGPYGUBR/Id0hvWo=",
+        "owner": "cything",
         "repo": "nixpkgs",
-        "rev": "42b2d9e78979c3df637916721e6373d99016503d",
+        "rev": "9fd33c2070cfc3df4296eed81e041a3e313cea5f",
         "type": "github"
       },
       "original": {
-        "owner": "nixos",
+        "owner": "cything",
+        "ref": "btrbk",
         "repo": "nixpkgs",
-        "rev": "42b2d9e78979c3df637916721e6373d99016503d",
         "type": "github"
       }
     },
@@ -111,7 +111,7 @@
         "home-manager": "home-manager",
         "nixpkgs": "nixpkgs",
         "nixpkgs-borg": "nixpkgs-borg",
-        "nixpkgs-master": "nixpkgs-master",
+        "nixpkgs-btrbk": "nixpkgs-btrbk",
         "sops-nix": "sops-nix",
         "treefmt": "treefmt"
       }
diff --git a/flake.nix b/flake.nix
index b67754f..99e8f24 100644
--- a/flake.nix
+++ b/flake.nix
@@ -18,7 +18,7 @@
     };
 
     nixpkgs-borg.url = "github:cything/nixpkgs/borg";
-    nixpkgs-master.url = "github:nixos/nixpkgs/42b2d9e78979c3df637916721e6373d99016503d";
+    nixpkgs-btrbk.url = "github:cything/nixpkgs/btrbk";
   };
 
   outputs =
diff --git a/hosts/ytnix/default.nix b/hosts/ytnix/default.nix
index 1d92f59..6dc3ac3 100644
--- a/hosts/ytnix/default.nix
+++ b/hosts/ytnix/default.nix
@@ -1,7 +1,6 @@
 {
   config,
   pkgs,
-  lib,
   inputs,
   ...
 }:
@@ -10,9 +9,13 @@
     ./hardware-configuration.nix
     ../common.nix
     {
-      disabledModules = [ "services/backup/borgbackup.nix" ];
+      disabledModules = [
+        "services/backup/borgbackup.nix"
+        "services/backup/btrbk.nix"
+      ];
     }
     (inputs.nixpkgs-borg + "/nixos/modules/services/backup/borgbackup.nix")
+    (inputs.nixpkgs-btrbk + "/nixos/modules/services/backup/btrbk.nix")
   ];
 
   sops.age.keyFile = "/root/.config/sops/age/keys.txt";
@@ -251,7 +254,9 @@
 
   services.btrbk.instances.local = {
     onCalendar = "hourly";
+    snapshotOnly = true;
     settings = {
+      # only create snapshots automatically. backups are triggered manually with `btrbk resume`
       snapshot_preserve = "7d";
       snapshot_preserve_min = "2d";
       target_preserve = "*d";
@@ -265,9 +270,6 @@
       };
     };
   };
-  # only create snapshots automatically. backups are triggered manually
-  systemd.services."btrbk-local".serviceConfig.ExecStart =
-    lib.mkForce "${pkgs.btrbk}/bin/btrbk -c /etc/btrbk/local.conf snapshot";
 
   programs.steam = {
     enable = true;