diff --git a/flake.nix b/flake.nix
index bd3a7c4..57f6714 100644
--- a/flake.nix
+++ b/flake.nix
@@ -11,6 +11,10 @@
       pname = "cassowary";
       version = "0.6";
       format = "wheel";
+      propagatedBuildInputs = [
+        pkgs.python312Packages.libvirt
+        pkgs.python312Packages.pyqt5
+      ];
       src = pkgs.fetchurl {
         url = "https://github.com/casualsnek/cassowary/releases/download/0.6/cassowary-0.6-py3-none-any.whl";
         hash = "sha256-WWvCE1yKhz50AE8s/UG4IYT2eJKxFZinTrOBs5AGt9g=";