diff --git a/flake.nix b/flake.nix
index 28c634d..9b58269 100644
--- a/flake.nix
+++ b/flake.nix
@@ -73,6 +73,7 @@
                         "wget"
                         "zsh"
                         "yubikey-agent"
+                        "pkg-config"
                         ];
                 taps = [
                     "hashicorp/tap"