diff --git a/ocaml-gsl.spec b/ocaml-gsl.spec
index e8607f3..4ab3c8b 100644
--- a/ocaml-gsl.spec
+++ b/ocaml-gsl.spec
@@ -2,7 +2,7 @@
 
 Name:           ocaml-gsl
 Version:        1.19.1
-Release:        5%{?dist}
+Release:        6%{?dist}
 Summary:        Interface to GSL (GNU scientific library) for OCaml
 License:        GPLv2
 
@@ -83,6 +83,9 @@ make install
 
 
 %changelog
+* Wed Jul 26 2017 Richard W.M. Jones <rjones@redhat.com> - 1.19.1-6
+- Rebuild for new gsl 2.4 (thanks: Arthur Mello).
+
 * Tue Jun 27 2017 Richard W.M. Jones <rjones@redhat.com> - 1.19.1-5
 - OCaml 4.04.2 rebuild.