diff --git a/flake.nix b/flake.nix
index 7f6ee89..486d57d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -53,9 +53,30 @@
           '';
         };
 
+        nixosModules.default = { config }:
+          with lib;
+          let cfg = config.services.gnome-autounlock-keyring;
+          in {
+            options.services.gnome-autounlock-keyring = {
+              enable = mkEnableOption "gnome-autounlock.keyring";
+            };
+
+            config = mkIf cfg.enable {
+              systemd.user.services.gnome-autounlock-keyring = {
+                description = "Automatically unlock gnome keyring using TPM";
+                wantedBy = [ "gnome-session.target" ];
+                script = ''
+                  ${packages.default}/bin/gnome-autounlock-keyring unlock
+                '';
+                serviceConfig = { Type = "oneshot"; };
+              };
+            };
+          };
+
         devShells.default = pkgs.mkShell {
           shellHook = "${packages.default.preBuild}";
-          inherit (packages.default) nativeBuildInputs buildInputs LIBCLANG_PATH;
+          inherit (packages.default)
+            nativeBuildInputs buildInputs LIBCLANG_PATH;
         };
       });
 }