diff --git a/CHANGELOG.md b/CHANGELOG.md
index ed87812..f34deb7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,43 @@
+## v0.3.0 2016-05-19
+
+Breaks interface for adding new plugins. Register new plugin via:
+
+```
+def self.extended(klass)
+  klass.register_initializer_plugin NewPlugin
+end
+```
+
+instead of:
+
+```
+def self.extended(klass)
+  klass.initializer_builder.register NewPlugin
+end
+```
+
+While the private method ##initializer_builder is still accessible
+its method #register doesn't mutate the builder instance.
+
+### Changed (backward-incompatible changes)
+
+* Made Mixin##initializer_builder method private (@nepalez)
+* Add Mixin#register_initializer_plugin(plugin) method (@nepalez)
+
+### Bugs Fixed
+
+* Prevent plugin's registry from polluting superclass (@nepalez)
+
+[Compare v0.2.1...v0.3.0](https://github.com/dry-rb/dry-initializer/compare/v0.2.1..v0.3.0)
+
+### Internals
+
+* Make all instances (Builder and Signature) immutable (@nepalez)
+* Decouple mixin from a builder to prevent pollution (@nepalez)
+* Ensure default value block can use private variables (@jeremyf)
+
+[Compare v0.2.0...v0.2.1](https://github.com/dry-rb/dry-initializer/compare/v0.2.0...v0.2.1)
+
 ## v0.2.1 2016-05-19
 
 ### Bugs Fixed
diff --git a/dry-initializer.gemspec b/dry-initializer.gemspec
index 207f226..a30c55f 100644
--- a/dry-initializer.gemspec
+++ b/dry-initializer.gemspec
@@ -1,6 +1,6 @@
 Gem::Specification.new do |gem|
   gem.name     = "dry-initializer"
-  gem.version  = "0.2.1"
+  gem.version  = "0.3.0"
   gem.author   = ["Vladimir Kochnev (marshall-lee)", "Andrew Kozin (nepalez)"]
   gem.email    = ["hashtable@yandex.ru", "andrew.kozin@gmail.com"]
   gem.homepage = "https://github.com/dryrb/dry-initializer"