CHANGELOG.md in slack-ruby-bot-server-0.8.3 vs CHANGELOG.md in slack-ruby-bot-server-0.9.0

@@ -1,7 +1,11 @@
 ### Changelog
 
-#### 0.8.3 (2019/01/17)
+#### 0.9.0 (2019/2/25)
+
+* [#93](https://github.com/slack-ruby/slack-ruby-bot-server/pull/93): Removed ping worker in favor of slack-ruby-client lower level ping - [@dblock](https://github.com/dblock).
+
+#### 0.8.3 (2019/1/17)
 
 * [#88](https://github.com/slack-ruby/slack-ruby-bot-server/issues/88): Fix: compatibility with Grape 1.2.x - [@dblock](https://github.com/dblock).
 
 #### 0.8.2 (2018/10/11)