diff --git a/CHANGELOG.md b/CHANGELOG.md
index a67bfa5..6d3d760 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+### 0.15.1 (Next)
+
+* Your contribution here.
+
 ### 0.15.0 (2020/5/8)
 
 * [#258](https://github.com/slack-ruby/slack-ruby-bot/pull/258): Extract development dependencies (VCR) from shared rspec configuraion - [@dikond](https://github.com/dikond).
diff --git a/README.md b/README.md
index 3dbbd61..aff18bd 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,8 @@ If you are not familiar with Slack bots or Slack API concepts, you might want to
 
 ## Stable Release
 
-You're reading the documentation for the **stable** release of slack-ruby-bot, v0.15.0.
+You're reading the documentation for the **next** release of slack-ruby-bot.
+Please see the documentation for the [last stable release, v0.15.0](https://github.com/slack-ruby/slack-ruby-bot/tree/v0.15.0) unless you're integrating with HEAD.
 See [CHANGELOG](CHANGELOG.md) for a history of changes and [UPGRADING](UPGRADING.md) for how to upgrade to more recent versions.
 
 ## Usage
diff --git a/lib/slack-ruby-bot/version.rb b/lib/slack-ruby-bot/version.rb
index 7421eb5..994de52 100644
--- a/lib/slack-ruby-bot/version.rb
+++ b/lib/slack-ruby-bot/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module SlackRubyBot
-  VERSION = '0.15.0'
+  VERSION = '0.15.1'
 end