diff --git a/CHANGELOG.md b/CHANGELOG.md
index 441d86b666..9d349cf245 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 * x.x.x
   - Allow reduction methods on the DataContainer class to accept axis argument as string which matches values in dimension_labels
   - Added the functions `set_norms` and `get_norms` to the `BlockOperator` class 
+  - Internal variable name change in BlockOperator to aid understanding 
 
 * 23.1.0
   - Fix bug in IndicatorBox proximal_conjugate