diff --git a/_service b/_service
index 260d725..6cb3e9a 100644
--- a/_service
+++ b/_service
@@ -1,7 +1,7 @@
 <services>
   <service name="tar_scm" mode="disabled">
     <param name="filename">ocaml-stdcompat</param>
-    <param name="revision">014ff59eee0e6014dd5e832b9c7ae645ef4a6397</param>
+    <param name="revision">89fe38402acf7bc6d63b32b9da22d9906391d7cb</param>
     <param name="scm">git</param>
     <param name="submodules">disable</param>
     <param name="url">https://github.com/thierry-martinez/stdcompat.git</param>
diff --git a/ocaml-stdcompat-18.tar.xz b/ocaml-stdcompat-18.tar.xz
deleted file mode 100644
index 54195da..0000000
--- a/ocaml-stdcompat-18.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:023c94ce25895359116540b03b54fa49619a5e0833f85a0bd9a76c3e709ead2d
-size 128808
diff --git a/ocaml-stdcompat-19.tar.xz b/ocaml-stdcompat-19.tar.xz
new file mode 100644
index 0000000..71ce3da
--- /dev/null
+++ b/ocaml-stdcompat-19.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:767f28362ee54bd57d598ed0424d154fffe5af6ece49d91439e3f1b6726edbb7
+size 128172
diff --git a/ocaml-stdcompat.changes b/ocaml-stdcompat.changes
index bcdcdc0..b553296 100644
--- a/ocaml-stdcompat.changes
+++ b/ocaml-stdcompat.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed Jun 22 22:22:22 UTC 2022 - ohering@suse.de
+
+- Update to version 19
+  Support for OCaml 5.0
+
 -------------------------------------------------------------------
 Mon Apr  4 04:04:04 UTC 2022 - ohering@suse.de
 
diff --git a/ocaml-stdcompat.spec b/ocaml-stdcompat.spec
index 5c1c690..425b186 100644
--- a/ocaml-stdcompat.spec
+++ b/ocaml-stdcompat.spec
@@ -16,9 +16,8 @@
 #
 
 
-%define _lto_cflags %nil
 Name:           ocaml-stdcompat
-Version:        18
+Version:        19
 Release:        0
 %{?ocaml_preserve_bytecode}
 Summary:        Stdcompat: compatibility module for OCaml standard library 
@@ -30,9 +29,9 @@ Source1:        %name-rpmlintrc
 BuildRequires:  autoconf
 BuildRequires:  automake
 BuildRequires:  bash
-BuildRequires:  ocamlfind(findlib)
-BuildRequires:  ocaml-rpm-macros >= 20220222
-BuildRequires:  ocaml(ocaml.opt)
+BuildRequires:  ocaml
+BuildRequires:  ocaml-dune >= 2.0
+BuildRequires:  ocaml-rpm-macros >= 20220409
 
 %description
 Stdcompat is a compatibility layer allowing programs to use some recent additions to the OCaml standard library while preserving the ability to be compiled on former versions of OCaml.
@@ -50,14 +49,12 @@ developing applications that use %name.
 %autosetup -p1
 
 %build
-%make_build -f Makefile.bootstrap
-%configure \
-	--libdir=%ocaml_standard_library
-%make_build -j1
+dune_release_pkgs='stdcompat'
+%ocaml_dune_setup
+%ocaml_dune_build
 
 %install
-%make_install
-find %buildroot -type f -exec chmod -v 644 '{}' +
+%ocaml_dune_install
 %ocaml_create_file_list
 
 %files -f %name.files