diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1a9b537..bc87103 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,28 @@
 
 ___
 
+# 0.4.0 (10-23-2024)
+
+##### Bugs
+- Fixed bug in normalization for batch updates.
+
+##### New features
+- Reworked modification handling to preserve main files and create new versions.
+- Improved update method to support list field updates.
+
+##### Documentation updates
+- Updated documentation to reflect recent changes.
+
+##### Maintenance
+- Updated configuration file (`config.yml`).
+- Updated `.gitignore` file.
+- Updated `_version.py` and `CHANGELOG.md` for new release.
+- Merged latest changes from the main branch of the repository.
+
+___
+
+___
+
 # 0.3.1 (10-16-2024)
 
 ##### Bugs
diff --git a/parquetdb/_version.py b/parquetdb/_version.py
index d0489a9..c2acc19 100644
--- a/parquetdb/_version.py
+++ b/parquetdb/_version.py
@@ -12,5 +12,5 @@
 __version_tuple__: VERSION_TUPLE
 version_tuple: VERSION_TUPLE
 
-__version__ = version = '0.3.1'
-__version_tuple__ = version_tuple = (0, 3, 1)
+__version__ = version = '0.4.0'
+__version_tuple__ = version_tuple = (0, 4, 0)