diff --git a/CHANGELOG.md b/CHANGELOG.md
index c02432a..8d02575 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,21 @@
 
 
 
+## v0.4.0 (2024-06-09)
+
+### Documentation
+
+* docs: readme improved on semantic versioning ([`108fb47`](https://github.com/openwebsearcheu-public/owi-cli/commit/108fb4759e46af2349880286f85a2046846b9b99))
+
+### Feature
+
+* feat: Less command for querying via duckdb ([`086b444`](https://github.com/openwebsearcheu-public/owi-cli/commit/086b444a449c217634511f483baf225cb8a0b2fd))
+
+### Unknown
+
+* doc: documentatoin of duckdb functions improved ([`3369a6b`](https://github.com/openwebsearcheu-public/owi-cli/commit/3369a6b50971ef34b071defc9eada5358713279c))
+
+
 ## v0.3.0 (2024-06-07)
 
 ### Feature
diff --git a/owilix/_version.py b/owilix/_version.py
index 7f5b5a9..2799612 100644
--- a/owilix/_version.py
+++ b/owilix/_version.py
@@ -1,3 +1,3 @@
 # These version placeholders will be replaced later during substitution.
-__version__ = "0.3.0-post.1+108fb47"
+__version__ = "0.4.0"
 __version_tuple__ = (0, 3, 0, "post", 1, "108fb47")
diff --git a/pyproject.toml b/pyproject.toml
index ee16424..7a8842c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "owilix"
-version = "0.3.0"
+version = "0.4.0"
 description = "OWILIX - the Command Line Interface for slicing and consuming the Open Web Index. "
 authors = ["Michael Granitzer <michael.granitzer@uni-passau.de>"]
 license = "MIT"