diff --git a/CHANGELOG.md b/CHANGELOG.md
index 05795d051..54ad91514 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@
 
    - Infrastructure
     - BREAKING: reordered internal instruction types. This breaks the **data format**
+    - BREAKING: Changed the on-disk encoding of the StaticRTree for better performance. This breaks the **data format**
 
    - Fixes:
     - Issue #2310: post-processing for local paths, fixes #2310