diff --git a/pkgs/x/xbuild/package.nix b/pkgs/x/xbuild/package.nix
index 7d070af..1842138 100644
--- a/pkgs/x/xbuild/package.nix
+++ b/pkgs/x/xbuild/package.nix
@@ -69,6 +69,7 @@ let
       pkgs.postgresql
       pkgs.findutils
       pkgs.which
+      pkgs.gnugrep
       capnpc
       cedro
     ];