diff --git a/packages/babel-preset-default/CHANGELOG.md b/packages/babel-preset-default/CHANGELOG.md
index 060cc915d5d815..07579a565ac286 100644
--- a/packages/babel-preset-default/CHANGELOG.md
+++ b/packages/babel-preset-default/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## Breaking Changes
+
+- Revert enabling the `shippedProposals` flag. That flag enables the use of stage-3 proposals, but the goal of this preset is to only support stage-4 features. [#22083](https://github.com/WordPress/gutenberg/pull/22083)
+
 ## 4.12.0 (2020-04-15)
 
 ### New Features