CHANGELOG.md in deimos-ruby-1.3.0.pre.beta3 vs CHANGELOG.md in deimos-ruby-1.3.0.pre.beta4

@@ -5,9 +5,13 @@
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## UNRELEASED
 
+# [1.3.0-beta4] - 2019-12-02
+- Fixed bug where by running `rake deimos:start` without
+  specifying a producer backend would crash.
+
 # [1.3.0-beta3] - 2019-11-26
 - Fixed bug in TestHelpers where key_decoder was not stubbed out.
 
 # [1.3.0-beta2] - 2019-11-22
 - Fixed bug where consumers would require a key config in all cases