diff --git a/CHANGELOG.md b/CHANGELOG.md
index 71d42d4..c5341cc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,13 @@
+## v0.4.0
+
+### News
+
+- Adds support to MySQL using decimal over float cast on calculations.
+
+### Updates
+
+- Grows up the decimal precision to enable billion of records count.
+
 ## v0.3.0
 
 ### News
diff --git a/Gemfile.lock b/Gemfile.lock
index 27c1a99..8e85f3f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    rating (0.3.0)
+    rating (0.4.0)
       activerecord (>= 4.2, < 6)
 
 GEM
diff --git a/lib/rating/version.rb b/lib/rating/version.rb
index 8b5769f..9504224 100644
--- a/lib/rating/version.rb
+++ b/lib/rating/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Rating
-  VERSION = '0.3.0'
+  VERSION = '0.4.0'
 end