diff --git a/CHANGELOG.md b/CHANGELOG.md
index b3256e2d..a098c2be 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@ This changelog was created using the `clu` binary
 
 ### Improvements
 
+- (all) [#30](https://github.com/evmos/os/pull/30) Add example chain implementation and ante handlers.
 - (contracts) [#24](https://github.com/evmos/os/pull/24) Add contracts directory and compilation script.
 - (cli) [#23](https://github.com/evmos/os/pull/23) Add client, cmd and version packages.
 - (server) [#22](https://github.com/evmos/os/pull/22) Add server implementation.