diff --git a/ocaml-xmlm.spec b/ocaml-xmlm.spec
index 8eba405..e8ba621 100644
--- a/ocaml-xmlm.spec
+++ b/ocaml-xmlm.spec
@@ -9,7 +9,7 @@ ExcludeArch: %{ix86}
 
 Name:           ocaml-%{libname}
 Version:        1.4.0
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        A streaming XML codec
 
 License:        ISC
@@ -80,6 +80,9 @@ grep expected invalid-err.log >/dev/null
 
 
 %changelog
+* Thu Oct 05 2023 Richard W.M. Jones <rjones@redhat.com> - 1.4.0-4
+- OCaml 5.1 rebuild for Fedora 40
+
 * Wed Oct  4 2023 Jerry James <loganjerry@gmail.com> - 1.4.0-3
 - Use the %%ocaml_install macro