diff --git a/flake.nix b/flake.nix
index cbdb977..1189431 100644
--- a/flake.nix
+++ b/flake.nix
@@ -20,7 +20,7 @@
   }:
     flake-utils.lib.eachDefaultSystem (system: let
       pkgs = import nixpkgs {inherit system;};
-      devDeps = with pkgs; [hugo];
+      devDeps = with pkgs; [hugo brotli zopfli parallel];
     in {
       devShells.default = pkgs.mkShell {
         packages = devDeps;