diff --git a/_oasis b/_oasis
index c4c0166..c5d3d99 100644
--- a/_oasis
+++ b/_oasis
@@ -1,6 +1,6 @@
 OASISFormat: 0.4
 Name:        webmachine
-Version:     dev
+Version:     0.4.0
 Synopsis:    A REST toolkit for OCaml
 Description: OCaml webmachine is a layer on top of cohttp that implements a
   state-machine-based HTTP request processor. It's particularly well-suited for
diff --git a/lib/META b/lib/META
index 316ee2b..59a4fea 100644
--- a/lib/META
+++ b/lib/META
@@ -1,6 +1,6 @@
 # OASIS_START
-# DO NOT EDIT (digest: fb5e7ddfe88d8c1fc4c8a6c5717c4d42)
-version = "dev"
+# DO NOT EDIT (digest: 6acbc6c41d37929fa034fcc77443f8da)
+version = "0.4.0"
 description = "A REST toolkit for OCaml"
 requires = "calendar cohttp dispatch re re.str uri"
 archive(byte) = "webmachine.cma"
diff --git a/setup.ml b/setup.ml
index 283940d..aec3f1a 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: d06933dcf281f4b31f5c8250911a59b0) *)
+(* DO NOT EDIT (digest: 6a3f695c9daff568728661e88e8da26c) *)
 (*
    Regenerated by OASIS v0.4.6
    Visit http://oasis.forge.ocamlcore.org for more information and
@@ -6914,7 +6914,7 @@ let setup_t =
           alpha_features = [];
           beta_features = [];
           name = "webmachine";
-          version = "dev";
+          version = "0.4.0";
           license =
             OASISLicense.DEP5License
               (OASISLicense.DEP5Unit
@@ -7307,7 +7307,7 @@ let setup_t =
        };
      oasis_fn = Some "_oasis";
      oasis_version = "0.4.6";
-     oasis_digest = Some "\205\220\236NV\207;fB\155\231\159x\176\254@";
+     oasis_digest = Some "\t\248VZOo\020\221\1348\221\169j\006\173\221";
      oasis_exec = None;
      oasis_setup_args = [];
      setup_update = false