diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7bb3e1142..dc9ee4857 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,12 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## Unreleased
 
+### Added
+
+### Fixed
+
+## [0.4.0.0] - 2017-01-19
+
 ### Added
 - Allow test database to be on another host - @dsimunic
 - `Prefer: params=single-object` to treat payload as single json argument in RPC - @dsimunic
diff --git a/README.md b/README.md
index 5b6a26fad..dcac6062d 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ You can use it as inspiration for test-driven server migrations in
 your own projects.
 
 Also try other tools in the PostgREST
-[ecosystem](http://postgrest.com/install/ecosystem).
+[ecosystem](http://postgrest.com/en/v0.4/intro.html#ecosystem).
 
 ### Usage
 
@@ -35,12 +35,9 @@ Also try other tools in the PostgREST
 ### Performance
 
 TLDR; subsecond response times for up to 2000 requests/sec on Heroku
-free tier. ([see the load
-test](http://postgrest.com/admin/performance/#benchmarks))
-
-If you're used to servers written in interpreted languages (or named
-after precious gems), prepare to be pleasantly surprised by PostgREST
-performance.
+free tier. If you're used to servers written in interpreted languages
+(or named after precious gems), prepare to be pleasantly surprised by
+PostgREST performance.
 
 Three factors contribute to the speed. First the server is written
 in [Haskell](https://www.haskell.org/) using the
@@ -63,25 +60,20 @@ by
 * Using the PostgreSQL binary protocol
 * Being stateless to allow horizontal scaling
 
-Ultimately the server (when load balanced) is constrained by database
-performance. This may make it inappropriate for very large traffic
-load. To learn more about scaling with Heroku and Amazon RDS see
-the [performance guide](http://postgrest.com/admin/performance/).
-
 Other optimizations are possible, and some are outlined in the
 [Future Features](#future-features).
 
 ### Security
 
-PostgREST handles authentication (via [JSON Web
-Tokens](http://postgrest.com/admin/security/#json-web-tokens))
-and delegates authorization to the role information defined in the
-database. This ensures there is a single declarative source of truth
-for security.  When dealing with the database the server assumes
-the identity of the currently authenticated user, and for the
-duration of the connection cannot do anything the user themselves
-couldn't. Other forms of authentication can be built on top
-of the JWT primitive. See the docs for more information.
+PostgREST [handles
+authentication](http://postgrest.com/en/v0.4/auth.html) (via JSON Web
+Tokens) and delegates authorization to the role information defined in
+the database. This ensures there is a single declarative source of truth
+for security.  When dealing with the database the server assumes the
+identity of the currently authenticated user, and for the duration of
+the connection cannot do anything the user themselves couldn't. Other
+forms of authentication can be built on top of the JWT primitive. See
+the docs for more information.
 
 PostgreSQL 9.5 supports true [row-level
 security](http://www.postgresql.org/docs/9.5/static/ddl-rowsecurity.html).
@@ -124,7 +116,7 @@ surprises, such as enforcing idempotent PUT requests, and
 
 See examples of [PostgreSQL
 constraints](http://www.tutorialspoint.com/postgresql/postgresql_constraints.htm)
-and the [guide to routing](http://postgrest.com/api/reading/).
+and the [API guide](http://postgrest.com/en/v0.4/api.html).
 
 ### Thanks
 
diff --git a/app.json b/app.json
index 66f390416..e5665ade0 100644
--- a/app.json
+++ b/app.json
@@ -10,7 +10,7 @@
     },
     "POSTGREST_VER": {
       "description": "Version of PostgREST to deploy",
-      "value": "0.3.2.0"
+      "value": "0.4.0.0"
     },
     "DB_NAME": {
       "description": "Database name",
diff --git a/postgrest.cabal b/postgrest.cabal
index ac22cb0dc..83c86742b 100644
--- a/postgrest.cabal
+++ b/postgrest.cabal
@@ -2,7 +2,7 @@ name:                  postgrest
 description:           Reads the schema of a PostgreSQL database and creates RESTful routes
                        for the tables and views, supporting all HTTP verbs that security
                        permits.
-version:               0.3.2.0
+version:               0.4.0.0
 synopsis:              REST API for any Postgres database
 license:               MIT
 license-file:          LICENSE
diff --git a/stack.yaml b/stack.yaml
index 6424103c5..2f2b5528e 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -4,6 +4,6 @@ extra-deps:
   - hasql-pool-0.4.1
   - hasql-transaction-0.5
 ghc-options:
-  postgrest: -O2 -Werror -Wall -fwarn-identities
+  postgrest: -O2 -Werror -Wall -fwarn-identities -fno-warn-redundant-constraints
 nix:
   packages: [postgresql, zlib]