diff --git a/CHANGELOG.md b/CHANGELOG.md
index 062938528a..03f09fbb46 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,9 @@ Bugfixes and new Features
 
 https://github.com/runatlantis/atlantis/releases/tag/v0.21.0
 
+## Breaking changes
+* Terraform version 1.x have been removed to deprecate beta versions of terraform and reduce the docker image size. Each version of terraform is about 80 MB. ([#2619](https://github.com/runatlantis/atlantis/pull/2619))
+
 # v0.20.1
 
 Bugfixes and new Features