diff --git a/nixos-module-server.nix b/nixos-module-server.nix
index 74bac7f..85300b9 100644
--- a/nixos-module-server.nix
+++ b/nixos-module-server.nix
@@ -29,6 +29,7 @@ in
   };
 
   config = lib.mkIf cfg.enable {
+    environment.systemPackages = [ cfg.package ];
     systemd.services.nix-cache-login = {
       description = "Nix cache login - service account token refresh";
       serviceConfig = {
diff --git a/nixos-module.nix b/nixos-module.nix
index ab0e12a..d2ad4e7 100644
--- a/nixos-module.nix
+++ b/nixos-module.nix
@@ -22,6 +22,7 @@ in
   };
 
   config = lib.mkIf cfg.enable {
+    environment.systemPackages = [ cfg.package ];
     systemd.user.services.nix-cache-login = {
       description = "Nix cache login - refresh access token";
       serviceConfig = {