diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 95b7dcb06c..6e2eb243d6 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -23,6 +23,7 @@ Changelog
  * Fix: Split up `wagtail.admin.forms` to make it less prone to circular imports (Matt Westcott)
  * Fix: Disable linking to root page in rich text, making the page non-functional (Matt Westcott)
  * Fix: Pages should be editable and save-able even if there are broken page or document links in rich text (Matt Westcott)
+ * Fix: Avoid redundant round-trips of JSON StreamField data on save, improving performance and preventing consistency issues on fixture loading (Andy Chosak, Matt Westcott)
 
 
 2.2.2 (29.08.2018)
diff --git a/docs/releases/2.3.rst b/docs/releases/2.3.rst
index 341a69e69f..ecd9663a5c 100644
--- a/docs/releases/2.3.rst
+++ b/docs/releases/2.3.rst
@@ -46,6 +46,8 @@ Bug fixes
  * Split up ``wagtail.admin.forms`` to make it less prone to circular imports (Matt Westcott)
  * Disable linking to root page in rich text, making the page non-functional (Matt Westcott)
  * Pages should be editable and save-able even if there are broken page or document links in rich text (Matt Westcott)
+ * Avoid redundant round-trips of JSON StreamField data on save, improving performance and preventing consistency issues on fixture loading (Andy Chosak, Matt Westcott)
+
 
 Upgrade considerations
 ======================