diff --git a/ocaml-augeas.spec b/ocaml-augeas.spec
index 8dad119..67f1498 100644
--- a/ocaml-augeas.spec
+++ b/ocaml-augeas.spec
@@ -1,3 +1,6 @@
+# OCaml packages not built on i686 since OCaml 5 / Fedora 39.
+ExcludeArch: %{ix86}
+
 Name:           ocaml-augeas
 Version:        0.6
 Release:        24%{?dist}