diff --git a/flake.nix b/flake.nix
index bf3830471..2caaeccfc 100644
--- a/flake.nix
+++ b/flake.nix
@@ -11,6 +11,7 @@
       pname = "danbooru";
       inherit ruby;
       gemdir = ./.;
+      buildInputs = [ pkgs.pkg-config pkgs.glib ];
     };
     overlay = final: prev: rec {
       ruby = final.${rubyVer};