diff --git a/CHANGELOG.md b/CHANGELOG.md
index 03d44ea8..7d4a1289 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,16 @@ All notable changes to PNL will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [1.15.0] - 2024-01-03
+
+### Changed
+
+- Remove the full tensor representation of `PnlBasis` and only use the sparse tensor (#9).
+
+### Fixed
+
+- Fix unpacking of sparse matrices.
+
 ## [1.14.0] - 2023-12-20
 
 ### Added
diff --git a/VERSION b/VERSION
index 850e7424..141f2e80 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.14.0
+1.15.0