diff --git a/CHANGELOG.md b/CHANGELOG.md
index d40bacfed7..9b22245134 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+## 0.12.0
+* Generation performance improved from 20-65% on large packages (more improvement on packages
+  with lower usage of comment references and complex inheritance chains, like angular2).
 * Improvements to warnings, including indicating referring elements where possible. #1405
 * Enable support for generic function types.  #1321
 * Update analyzer to 0.30.  #1403
diff --git a/lib/dartdoc.dart b/lib/dartdoc.dart
index 0a9e9129dc..a800dd0607 100644
--- a/lib/dartdoc.dart
+++ b/lib/dartdoc.dart
@@ -45,7 +45,7 @@ export 'src/sdk.dart';
 
 const String name = 'dartdoc';
 // Update when pubspec version changes.
-const String version = '0.11.2';
+const String version = '0.12.0';
 
 final String defaultOutDir = path.join('doc', 'api');
 
diff --git a/pubspec.yaml b/pubspec.yaml
index d17917f6c8..63bd9be894 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: dartdoc
 # Also update the `version` field in lib/dartdoc.dart.
-version: 0.11.2
+version: 0.12.0
 author: Dart Team <misc@dartlang.org>
 description: A documentation generator for Dart.
 homepage: https://github.com/dart-lang/dartdoc
diff --git a/testing/test_package_docs/index.html b/testing/test_package_docs/index.html
index fdc2e300c1..9abfda6d2a 100644
--- a/testing/test_package_docs/index.html
+++ b/testing/test_package_docs/index.html
@@ -4,7 +4,7 @@
   <meta charset="utf-8">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <meta name="viewport" content="width=device-width, initial-scale=1">
-  <meta name="generator" content="made with love by dartdoc 0.11.2">
+  <meta name="generator" content="made with love by dartdoc 0.12.0">
   <meta name="description" content="test_package API docs, for the Dart programming language.">
   <title>test_package - Dart API docs</title>