diff --git a/.travis.yml b/.travis.yml
index fbe5161..48809bb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,8 +7,8 @@ elixir:
   - 1.5
 
 otp_release:
-  - 19
-  - 20
+  - 19.3
+  - 20.0
 
 env: MIX_ENV=test
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 252f268..169f02c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # CHANGELOG
 
-## Version 0.3.2
+## Version 0.4.0
 
 ### Improvements
 
diff --git a/README.md b/README.md
index 71688fa..9e22ebc 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ You can find the full documentation online: [docs](https://hexdocs.pm/ecto_autos
 
 ```elixir
 def deps do
-  # installation via hex (version 0.3 only supports `{:ecto, ">= 2.1"}`):
+  # installation via hex (version 0.3 and onwards only supports `{:ecto, ">= 2.1"}`):
   [{:ecto_autoslug_field, "~> 0.3"}]
 
   # if you want to use github:
diff --git a/mix.exs b/mix.exs
index 40ba1a6..b67878a 100644
--- a/mix.exs
+++ b/mix.exs
@@ -1,7 +1,7 @@
 defmodule EctoAutoslugField.Mixfile do
   use Mix.Project
 
-  @version "0.3.2"
+  @version "0.4.0"
   @url "https://github.com/sobolevn/ecto_autoslug_field"
 
   def project do