diff --git a/_oasis b/_oasis
index 330c645..73971be 100644
--- a/_oasis
+++ b/_oasis
@@ -1,6 +1,6 @@
 OASISFormat: 0.4
 Name:        angstrom
-Version:     dev
+Version:     0.5.1
 Authors:     Spiros Eliopoulos <spiros@inhabitedtype.com>
 Maintainers: Spiros Eliopoulos <spiros@inhabitedtype.com>
 Homepage:    https://github.com/inhabitedtype/angstrom
diff --git a/lib/META b/lib/META
index c2e7ad4..8489cc0 100644
--- a/lib/META
+++ b/lib/META
@@ -1,6 +1,6 @@
 # OASIS_START
-# DO NOT EDIT (digest: 57c96af16cb4b5f9180a6e9c61e4d7ea)
-version = "dev"
+# DO NOT EDIT (digest: 52b89c6dc23ce27795d50d94e1eac8a4)
+version = "0.5.1"
 description = "Parser combinators built for speed and memory-efficiency"
 requires = "cstruct ocplib-endian result"
 archive(byte) = "angstrom.cma"
@@ -9,7 +9,7 @@ archive(native) = "angstrom.cmxa"
 archive(native, plugin) = "angstrom.cmxs"
 exists_if = "angstrom.cma"
 package "unix" (
- version = "dev"
+ version = "0.5.1"
  description = "Parser combinators built for speed and memory-efficiency"
  requires = "angstrom result"
  archive(byte) = "angstrom_unix.cma"
@@ -20,7 +20,7 @@ package "unix" (
 )
 
 package "lwt-unix" (
- version = "dev"
+ version = "0.5.1"
  description = "Parser combinators built for speed and memory-efficiency"
  requires = "angstrom lwt.unix result"
  archive(byte) = "angstrom_lwt_unix.cma"
@@ -31,7 +31,7 @@ package "lwt-unix" (
 )
 
 package "async" (
- version = "dev"
+ version = "0.5.1"
  description = "Parser combinators built for speed and memory-efficiency"
  requires = "angstrom async result threads"
  archive(byte) = "angstrom_async.cma"
diff --git a/setup.ml b/setup.ml
index 9c0d1b7..f191bf2 100644
--- a/setup.ml
+++ b/setup.ml
@@ -1,7 +1,7 @@
 (* setup.ml generated for the first time by OASIS v0.4.5 *)
 
 (* OASIS_START *)
-(* DO NOT EDIT (digest: 928bdedd5db6db56b7873d5e43d253cb) *)
+(* DO NOT EDIT (digest: 924412813276e73ee135cf913510d8c3) *)
 (*
    Regenerated by OASIS v0.4.8
    Visit http://oasis.forge.ocamlcore.org for more information and
@@ -7043,7 +7043,7 @@ let setup_t =
        {
           oasis_version = "0.4";
           ocaml_version = Some (OASISVersion.VGreaterEqual "4.03");
-          version = "dev";
+          version = "0.5.1";
           license =
             OASISLicense.DEP5License
               (OASISLicense.DEP5Unit
@@ -8412,7 +8412,7 @@ let setup_t =
        };
      oasis_fn = Some "_oasis";
      oasis_version = "0.4.8";
-     oasis_digest = Some "\231\168\234{z1\t\163\196\155\212\205U\168\141\023";
+     oasis_digest = Some "\017\004\150(b\017D\024+m\244\012n\209\172\208";
      oasis_exec = None;
      oasis_setup_args = [];
      setup_update = false