diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
index 43494b8b..bc65dafc 100644
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -2,6 +2,20 @@
 
 All notable changes to this project (at least, from v3.0.0 onwards) are documented in this file.
 
+## 5.3.0 - 2021-08-19
+
+[Release Notes](https://github.com/pat/thinking-sphinx/releases/tag/v5.3.0)
+
+### Changed
+
+* StaleIdsExceptions now include a URL in their error message with recommendations on how to resolve the problem.
+* Fire real-time callbacks on `after_commit` (including deletions) to ensure data is fully persisted to the database before updating Sphinx. More details in [#1204](https://github.com/pat/thinking-sphinx/pull/1204).
+
+### Fixed
+
+* Ensure Thinking Sphinx's ActiveRecord components are loaded by either Rails' after_initialise hook or ActiveSupport's on_load notification, because the order of these two events are not consistent.
+* Remove `app/indices` from eager_load_paths in Rails 4.2 and 5, to match the behaviour in 6.
+
 ## 5.2.1 - 2021-08-09
 
 [Release Notes](https://github.com/pat/thinking-sphinx/releases/tag/v5.2.1)
diff --git a/README.textile b/README.textile
index 3a855888..2ca7299a 100644
--- a/README.textile
+++ b/README.textile
@@ -1,6 +1,6 @@
 h1. Thinking Sphinx
 
-Thinking Sphinx is a library for connecting ActiveRecord to the Sphinx full-text search tool, and integrates closely with Rails (but also works with other Ruby web frameworks). The current release is v5.2.1.
+Thinking Sphinx is a library for connecting ActiveRecord to the Sphinx full-text search tool, and integrates closely with Rails (but also works with other Ruby web frameworks). The current release is v5.3.0.
 
 h2. Upgrading
 
@@ -14,7 +14,7 @@ It's a gem, so install it like you would any other gem. You will also need to sp
 
 <pre><code>gem 'mysql2',          '~> 0.4',    :platform => :ruby
 gem 'jdbc-mysql',      '~> 5.1.35', :platform => :jruby
-gem 'thinking-sphinx', '~> 5.2'</code></pre>
+gem 'thinking-sphinx', '~> 5.3'</code></pre>
 
 The MySQL gems mentioned are required for connecting to Sphinx, so please include it even when you're using PostgreSQL for your database.
 
diff --git a/thinking-sphinx.gemspec b/thinking-sphinx.gemspec
index 5a10d80d..a99c3da1 100644
--- a/thinking-sphinx.gemspec
+++ b/thinking-sphinx.gemspec
@@ -5,7 +5,7 @@ $:.push File.expand_path('../lib', __FILE__)
 
 Gem::Specification.new do |s|
   s.name        = 'thinking-sphinx'
-  s.version     = '5.2.1'
+  s.version     = '5.3.0'
   s.platform    = Gem::Platform::RUBY
   s.authors     = ["Pat Allan"]
   s.email       = ["pat@freelancing-gods.com"]