diff --git a/CHANGELOG.md b/CHANGELOG.md
index 59df474..aa14dab 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 2.3.3 [unreleased]
+## 2.4.0
 
 - Fixed `similar` for Elasticsearch 6
 - Added `inheritance` option
diff --git a/README.md b/README.md
index b04290a..7a05728 100644
--- a/README.md
+++ b/README.md
@@ -971,6 +971,14 @@ class Dog < Animal
 end
 ```
 
+In your parent model, set:
+
+```ruby
+class Animal < ApplicationRecord
+  searchkick inheritance: true
+end
+```
+
 The parent and child model can both reindex.
 
 ```ruby
diff --git a/lib/searchkick/version.rb b/lib/searchkick/version.rb
index e0b2259..4e10e6f 100644
--- a/lib/searchkick/version.rb
+++ b/lib/searchkick/version.rb
@@ -1,3 +1,3 @@
 module Searchkick
-  VERSION = "2.3.2"
+  VERSION = "2.4.0"
 end
--
libgit2 0.21.0