diff --git a/dev-ml/ppx_bin_prot/ppx_bin_prot-0.14.0.ebuild b/dev-ml/ppx_bin_prot/ppx_bin_prot-0.14.0.ebuild
index 41ef683e28d6e..09c3fc426cd0f 100644
--- a/dev-ml/ppx_bin_prot/ppx_bin_prot-0.14.0.ebuild
+++ b/dev-ml/ppx_bin_prot/ppx_bin_prot-0.14.0.ebuild
@@ -23,6 +23,7 @@ RDEPEND="
 	>=dev-ml/ppxlib-0.18.0:=
 	>=dev-ml/ocaml-migrate-parsetree-2.0.0:=
 	dev-ml/cinaps:=
+	dev-ml/sexplib0:=
 	"
 DEPEND="${RDEPEND}
 	test? (