diff --git a/flake.lock b/flake.lock
index 2be9ab5..d276258 100644
--- a/flake.lock
+++ b/flake.lock
@@ -221,6 +221,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-c5ae371": {
+      "locked": {
+        "lastModified": 1762977756,
+        "narHash": "sha256-4PqRErxfe+2toFJFgcRKZ0UI9NSIOJa+7RXVtBhy4KE=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "c5ae371f1a6a7fd27823bc500d9390b38c05fa55",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "c5ae371f1a6a7fd27823bc500d9390b38c05fa55",
+        "type": "github"
+      }
+    },
     "nixpkgs-lib": {
       "locked": {
         "lastModified": 1761765539,
@@ -280,6 +296,7 @@
         "impermanence": "impermanence",
         "nixos-hardware": "nixos-hardware",
         "nixpkgs": "nixpkgs",
+        "nixpkgs-c5ae371": "nixpkgs-c5ae371",
         "nixpkgs-unstable": "nixpkgs-unstable",
         "radicale-birthday-calendar": "radicale-birthday-calendar",
         "sops": "sops",
diff --git a/flake.nix b/flake.nix
index ba8add6..6ff3c65 100644
--- a/flake.nix
+++ b/flake.nix
@@ -4,6 +4,8 @@
 
     nixpkgs.url = "github:nixos/nixpkgs/nixos-25.05";
 
+    nixpkgs-c5ae371.url = "github:nixos/nixpkgs/c5ae371f1a6a7fd27823bc500d9390b38c05fa55";
+
     nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
 
     nixos-hardware.url = "github:NixOS/nixos-hardware/master";
diff --git a/modules/system/programs/winboat.nix b/modules/system/programs/winboat.nix
index 42e53e5..603103d 100644
--- a/modules/system/programs/winboat.nix
+++ b/modules/system/programs/winboat.nix
@@ -1,6 +1,7 @@
 {
   config,
-  pkgs-unstable,
+  inputs,
+  pkgs,
   lib,
   ...
 }:
@@ -11,6 +12,13 @@
     virtualisation.docker.enable = true;
     users.users.seb.extraGroups = [ config.users.groups.docker.name ];
 
-    environment.systemPackages = [ pkgs-unstable.winboat ];
+    environment.systemPackages =
+      let
+        pkgs-c5ae371 = import inputs.nixpkgs-c5ae371 {
+          inherit (pkgs.stdenv.hostPlatform) system;
+          inherit (config.nixpkgs) config;
+        };
+      in
+      [ pkgs-c5ae371.winboat ];
   };
 }