diff --git a/CHANGELOG.md b/CHANGELOG.md
index 508e046..9e9aedd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## Next
+## v0.4.0
 
 - Add Transformers to mutate data in runtime.
 
diff --git a/README.md b/README.md
index 1871d21..82b6618 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@ Add `hush` to your list of dependencies in `mix.exs`:
 ```elixir
 def deps do
   [
-    {:hush, "~> 0.3.2"}
+    {:hush, "~> 0.4.0"}
   ]
 end
 ```
diff --git a/mix.exs b/mix.exs
index 0a9724a..c6d095c 100644
--- a/mix.exs
+++ b/mix.exs
@@ -1,7 +1,7 @@
 defmodule Hush.MixProject do
   use Mix.Project
 
-  @version "0.3.2"
+  @version "0.4.0"
   @source_url "https://github.com/gordalina/hush"
 
   def project do