diff --git a/CHANGES.rst b/CHANGES.rst
index cb33884..eb154b3 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -18,6 +18,15 @@
 Changes
 =======
 
+`0.4.1 <https://github.com/SwissDataScienceCenter/calamus/compare/v0.4.0...v0.4.1>`__ (2022-09-01)
+--------------------------------------------------------------------------------------------------
+
+Fixes
+~~~~~~~~
+
+- Remove usage of fields deprecated by marshmallow and don't forward calamus specific fields to
+  prevent warnings.
+
 `0.4.0 <https://github.com/SwissDataScienceCenter/calamus/compare/v0.3.14...v0.4.0>`__ (2022-04-05)
 ---------------------------------------------------------------------------------------------------
 
diff --git a/calamus/__init__.py b/calamus/__init__.py
index 6a9beea..3d26edf 100644
--- a/calamus/__init__.py
+++ b/calamus/__init__.py
@@ -1 +1 @@
-__version__ = "0.4.0"
+__version__ = "0.4.1"
diff --git a/pyproject.toml b/pyproject.toml
index e114852..99c2f87 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,7 @@
 
 [tool.poetry]
 name = "calamus"
-version = "0.4.0"
+version = "0.4.1"
 description = "calamus is a library built on top of marshmallow to allow (de-)Serialization of Python classes to JSON-LD."
 authors = ["Swiss Data Science Center <contact@datascience.ch>"]
 license = "Apache-2.0"
diff --git a/setup.py b/setup.py
index 442bc2e..33a2882 100644
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,7 @@
 setup(
     long_description=readme,
     name="calamus",
-    version="0.4.0",
+    version="0.4.1",
     description="calamus is a library built on top of marshmallow to allow (de-)Serialization of Python classes to JSON-LD.",
     python_requires="==3.*,>=3.7.1",
     project_urls={