diff --git a/dev-ml/ppx_fields_conv/ppx_fields_conv-0.9.0-r1.ebuild b/dev-ml/ppx_fields_conv/ppx_fields_conv-0.9.0-r1.ebuild
index eff75b6998804..69e25ca36f12c 100644
--- a/dev-ml/ppx_fields_conv/ppx_fields_conv-0.9.0-r1.ebuild
+++ b/dev-ml/ppx_fields_conv/ppx_fields_conv-0.9.0-r1.ebuild
@@ -20,6 +20,7 @@ DEPEND="
 	dev-ml/ppx_type_conv:=
 	dev-ml/fieldslib:=
 	dev-ml/ocaml-migrate-parsetree:=
+	dev-ml/ppx_traverse_builtins:=
 "
 RDEPEND="${DEPEND}"
 DEPEND="${DEPEND} dev-ml/opam dev-ml/jbuilder"