diff --git a/CHANGES b/CHANGES
index 684a619..6009f7a 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,10 @@
+2.3.0 (2-Aug-2016)
+* use fcntl(F_FULLFSYNC) on OSX rather than plain fsync
+* add linux-headers depext for alpine
+* hold the mutex around `ftruncate` while updating `size_sectors`
+* hold the mutex around bounds checks
+* require cstruct >= 1.3.0
+
 2.2.0 (3-Mar-2016)
 * Add basic Win32 support, tested via appveyor
 * Use logs library
diff --git a/_oasis b/_oasis
index 298c5dc..5599c95 100644
--- a/_oasis
+++ b/_oasis
@@ -1,6 +1,6 @@
 OASISFormat: 0.4
 Name:        mirage-block-unix
-Version:     2.2.0
+Version:     2.3.0
 Synopsis:    Mirage block driver for Unix
 Authors:     David Scott
 License:     ISC
diff --git a/lib/META b/lib/META
index 0271ee2..b50e5dd 100644
--- a/lib/META
+++ b/lib/META
@@ -1,6 +1,6 @@
 # OASIS_START
-# DO NOT EDIT (digest: b93ffbdb1440ca47739fd1a107fad589)
-version = "2.2.0"
+# DO NOT EDIT (digest: 312a616af69e79921b12c9b4fe4c9c17)
+version = "2.3.0"
 description = "Mirage block driver for Unix"
 requires = "cstruct cstruct.lwt lwt lwt.unix mirage-types logs"
 archive(byte) = "mirage_block_unix.cma"
diff --git a/setup.ml b/setup.ml
index 53c1e22..b201279 100644
--- a/setup.ml
+++ b/setup.ml
@@ -1,7 +1,7 @@
 (* setup.ml generated for the first time by OASIS v0.3.0 *)
 
 (* OASIS_START *)
-(* DO NOT EDIT (digest: 44e90654fb7ba124267eff52babcb5f2) *)
+(* DO NOT EDIT (digest: 0cc1d4358f0505f91fe045ff2509dc5e) *)
 (*
    Regenerated by OASIS v0.4.6
    Visit http://oasis.forge.ocamlcore.org for more information and
@@ -6883,7 +6883,7 @@ let setup_t =
           alpha_features = [];
           beta_features = [];
           name = "mirage-block-unix";
-          version = "2.2.0";
+          version = "2.3.0";
           license =
             OASISLicense.DEP5License
               (OASISLicense.DEP5Unit
@@ -7057,7 +7057,7 @@ let setup_t =
        };
      oasis_fn = Some "_oasis";
      oasis_version = "0.4.6";
-     oasis_digest = Some "�&\002E���\138�\029�\011\021\154�";
+     oasis_digest = Some "\253\134mt\142I\207\nq|\154h=\196\000\020";
      oasis_exec = None;
      oasis_setup_args = [];
      setup_update = false