diff --git a/CHANGES.md b/CHANGES.md
index 4851945..181ce90 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,6 +1,9 @@
 Changes to `paper_trail_manager`
 ================================
 
+* 0.4.0
+    * Allow configuration of ChangesController's parent class, route helpers, and layout
+
 * 0.3.0
     * Support Rails 3.2, 4.0, 4.1, and 4.2
     * Drop support for Rails 3.0 and 3.1
diff --git a/paper_trail_manager.gemspec b/paper_trail_manager.gemspec
index 3fedd2d..44896ad 100644
--- a/paper_trail_manager.gemspec
+++ b/paper_trail_manager.gemspec
@@ -4,7 +4,7 @@ $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 
 Gem::Specification.new do |spec|
   spec.name          = "paper_trail_manager"
-  spec.version       = "0.3.0"
+  spec.version       = "0.4.0"
   spec.authors       = ["Igal Koshevoy", "Reid Beels"]
   spec.authors       = ["mail@reidbeels.com"]
   spec.summary       = "A user interface for `paper_trail` versioning data in Ruby on Rails 3 applications."