diff --git a/CHANGELOG b/CHANGELOG
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+0.4.0.4:
+  - update README
+
 0.4.0.3:
   - drop client function for putUser
   - bump ormulu
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -3,31 +3,4 @@
 This implements part of the [SCIM standard](http://www.simplecloud.info)
 for identity management. The parts that are currently supported are:
 
- * User schema version 2.0
-
-## Building
-
-This project uses stack. You can install the sample executable with
-
-```sh
-stack install
-```
-
-## Developing and testing
-
-This library only implements the schemas and endpoints defined by the
-SCIM standard. You will need to implement the actual storage by giving
-an instance for the `Persistence` class.
-
-There's a simple in-memory implementation of this class, which is used
-for tests. You can run the tests with the standard stack interface:
-
-```sh
-stack test
-```
-
-# Contributing
-
-Before submitting a PR, make sure to install [ormolu](https://github.com/tweag/ormolu)
-by doing `stack install ormolu` (we pin the version in our `stack.yaml` file)
-and run `make format`.
+ * User schema version 2.0 (partial)
diff --git a/hscim.cabal b/hscim.cabal
--- a/hscim.cabal
+++ b/hscim.cabal
@@ -1,6 +1,6 @@
 cabal-version:      1.12
 name:               hscim
-version:            0.4.0.3
+version:            0.4.0.4
 synopsis:           hscim json schema and server implementation
 description:
   The README file will answer all the questions you might have
@@ -154,7 +154,7 @@
     , stm
     , stm-containers
     , time
-    , warp <= 3.4.2
+    , warp <= 3.5
 
   default-language:   Haskell2010