diff --git a/nix/default.nix b/nix/default.nix
index 7a573c1..17d2511 100644
--- a/nix/default.nix
+++ b/nix/default.nix
@@ -24,6 +24,7 @@ buildDunePackage {
   OCAMLFIND_TOOLCHAIN = crossName;
   propagatedBuildInputs = [
     astring
+    bibfmt
     cohttp-lwt-unix
     cmdliner
     clz