diff --git a/_service b/_service
index d0da49b..0bf96fb 100644
--- a/_service
+++ b/_service
@@ -1,7 +1,7 @@
 <services>
   <service name="tar_scm" mode="disabled">
     <param name="filename">ocaml-dune</param>
-    <param name="revision">e84ba5230f6afacb12f022937138a752f1c301b6</param>
+    <param name="revision">e41c66259135d6d1d72b031be6684bf8826a2586</param>
     <param name="scm">git</param>
     <param name="submodules">disable</param>
     <param name="url">https://github.com/ocaml/dune.git</param>
diff --git a/ocaml-dune-2.8.5.tar.xz b/ocaml-dune-2.8.5.tar.xz
deleted file mode 100644
index 5de48f5..0000000
--- a/ocaml-dune-2.8.5.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:d9ac058ad43e2595699aae4191d9db2ff07d100151391f1d640cf364443149f9
-size 1014340
diff --git a/ocaml-dune-2.9.1.tar.xz b/ocaml-dune-2.9.1.tar.xz
new file mode 100644
index 0000000..cb591cd
--- /dev/null
+++ b/ocaml-dune-2.9.1.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6db5f39f62e5b5b98a09e1b93b6ef474edfe8d322846854f15d7bf626177b31b
+size 1020488
diff --git a/ocaml-dune.changes b/ocaml-dune.changes
index 266491c..9fc874c 100644
--- a/ocaml-dune.changes
+++ b/ocaml-dune.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Sat Sep 11 12:34:56 UTC 2021 - ohering@suse.de
+
+- Update to version 2.9.1
+  see included CHANGES.md for details
+
 -------------------------------------------------------------------
 Fri Apr  9 09:09:09 UTC 2021 - ohering@suse.de
 
diff --git a/ocaml-dune.spec b/ocaml-dune.spec
index 98ad92a..d5b4503 100644
--- a/ocaml-dune.spec
+++ b/ocaml-dune.spec
@@ -24,7 +24,7 @@
 
 %define     pkg ocaml-dune
 Name:           %{pkg}%{nsuffix}
-Version:        2.8.5
+Version:        2.9.1
 Release:        0
 %{?ocaml_preserve_bytecode}
 Summary:        A composable build system for OCaml
@@ -34,7 +34,7 @@ BuildRoot:      %_tmppath/%name-%version-build
 URL:            https://opam.ocaml.org/packages/dune
 Source0:        %{pkg}-%{version}.tar.xz
 Requires:       ocamlfind(compiler-libs)
-BuildRequires:  ocaml-rpm-macros >= 20210409
+BuildRequires:  ocaml-rpm-macros >= 20210911
 BuildRequires:  ocaml(ocaml_base_version) >= 4.08
 %if "%{build_flavor}" == ""
 BuildRequires:  ocamlfind(compiler-libs)