diff --git a/ocaml-lwt.spec b/ocaml-lwt.spec
index c0d3a66..6fd74c7 100644
--- a/ocaml-lwt.spec
+++ b/ocaml-lwt.spec
@@ -2,7 +2,7 @@
 
 Name:          ocaml-lwt
 Version:       5.5.0
-Release:       4mamba
+Release:       5mamba
 Summary:       OCaml promises and concurrent I/O
 Group:         System/Libraries/OCaml
 Vendor:        openmamba
@@ -29,6 +29,7 @@ BuildRequires: ocaml-runtime
 BuildRequires: ocaml-seq-devel
 BuildRequires: ocaml-sexplib0-devel
 ## AUTOBUILDREQ-END
+BuildRequires: ocaml-sexplib0-devel >= 0:0.15.1-1mamba
 BuildRequires: ocaml
 BuildRequires: ocaml-camlp4-devel
 BuildRequires: ocaml-findlib
@@ -92,6 +93,9 @@ rm -rf %{buildroot}/usr/doc
 %doc CHANGES README.md
 
 %changelog
+* Sat Jun 25 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 5.5.0-5mamba
+- rebuilt by autoport with build requirements: ocaml-sexplib0-devel>=0:0.15.1-1mamba--buildreqocaml-sexplib0-devel>=0:0.15.1-1mamba
+
 * Sat May 14 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 5.5.0-4mamba
 - rebuilt with ocaml-react 1.2.2