diff --git a/default.nix b/default.nix
index 898ef442..d286ddce 100644
--- a/default.nix
+++ b/default.nix
@@ -59,6 +59,7 @@ in
         };
       in
       [
+        pkgs.which
         pkgs.npins
         pkgs.nil
         (pkgs.callPackage "${sources.agenix}/pkgs/agenix.nix" { })