diff --git a/ocaml-dune.spec b/ocaml-dune.spec
index b6da0c0..fd37cd8 100644
--- a/ocaml-dune.spec
+++ b/ocaml-dune.spec
@@ -6,7 +6,7 @@
 
 Name:           ocaml-%{libname}
 Version:        2.4.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        A composable build system for OCaml
 
 # Dune itself is MIT.  Some bundled libraries have a different license:
@@ -188,6 +188,9 @@ cp -ar README.md CHANGES.md MIGRATION.md doc/_build/* %{buildroot}%{_pkgdocdir}/
 %{_emacs_sitelispdir}/dune*
 
 %changelog
+* Thu Apr 02 2020 Richard W.M. Jones <rjones@redhat.com> - 2.4.0-2
+- Update all OCaml dependencies for RPM 4.16.
+
 * Fri Mar  6 2020 Jerry James <loganjerry@gmail.com> - 2.4.0-1
 - New version 2.4.0
 - Add bootstrap conditional for builds without ocaml-menhir