CHANGELOG.md in logstash-output-websocket-3.0.5 vs CHANGELOG.md in logstash-output-websocket-3.1.0

@@ -1,4 +1,7 @@
+## 3.1.0
+  - Update sinatra dependency to 2.x [#19](https://github.com/logstash-plugins/logstash-output-websocket/pull/19)
+
 ## 3.0.5
   - Docs: Set the default_codec doc attribute.
 
 ## 3.0.4
   - Update gemspec summary