CHANGELOG.md in mixlib-install-3.8.0 vs CHANGELOG.md in mixlib-install-3.9.0

@@ -1,12 +1,17 @@
 # Mixlib::Install Changes
 
-<!-- latest_release 3.8.0 -->
+<!-- latest_release 3.9.0 -->
+## [v3.9.0](https://github.com/chef/mixlib-install/tree/v3.9.0) (2017-12-20)
+
+#### Merged Pull Requests
+- add amazon linux 2.0 platform detection support [#246](https://github.com/chef/mixlib-install/pull/246) ([wrightp](https://github.com/wrightp))
+<!-- latest_release -->
+
 ## [v3.8.0](https://github.com/chef/mixlib-install/tree/v3.8.0) (2017-10-31)
 
 #### Merged Pull Requests
 - Add support for aarch64 [#244](https://github.com/chef/mixlib-install/pull/244) ([jeremiahsnapp](https://github.com/jeremiahsnapp))
-<!-- latest_release -->
 
 ## [v3.7.0](https://github.com/chef/mixlib-install/tree/v3.7.0) (2017-10-11)
 
 #### Merged Pull Requests
 - add #download_artifact method to Mixlib::Install API [#243](https://github.com/chef/mixlib-install/pull/243) ([wrightp](https://github.com/wrightp))
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