diff --git a/ocaml-biniou.spec b/ocaml-biniou.spec
index 63f667c..38b5b2d 100644
--- a/ocaml-biniou.spec
+++ b/ocaml-biniou.spec
@@ -6,7 +6,7 @@
 
 Name:           ocaml-%{libname}
 Version:        1.2.1
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Safe and fast binary data format
 
 License:        BSD
@@ -97,6 +97,9 @@ make test
 
 
 %changelog
+* Wed Jan 29 2020 Fedora Release Engineering <releng@fedoraproject.org> - 1.2.1-4
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild
+
 * Sun Jan 19 2020 Richard W.M. Jones <rjones@redhat.com> - 1.2.1-3
 - OCaml 4.10.0+beta1 rebuild.