diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5d81f91..361d782 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@ Note to self: See the bottom of this file for the release template text.
  - `//bonemeal`: Add optional node list constraint
  - `//walls`: Add optional thickness argument
  - `//floodfill`: Fix crash caused by internal refactoring of the `Queue` data structure
+ - `//sstack`: Add human-readable approx volumes of regions in the selection stack
 
 
 ## v1.12: The selection tools update (26th June 2021)