diff --git a/CHANGELOG.md b/CHANGELOG.md
index 09a2314d7..62b84114b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -41,6 +41,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Deprecated
 - Budget's `description_*` columns will be erased from database in next release. Please run rake task `budgets:phases:generate_missing` to migrate them. Details at Warning section of https://github.com/consul/consul/pull/2323
+- Budget::Investment's `internal_comments` attribute usage was removed, because of https://github.com/consul/consul/pull/2403, run rake task `investments:internal_comments:migrate_to_thread` to migrate existing values to the new internal comments thread. In next release database column will be removed.
 
 ### Removed
 - Spending Proposals urls from sitemap, that model is getting entirely deprecated soon.