diff --git a/micromed_io/__init__.py b/micromed_io/__init__.py
index 0682360..0d01ba1 100644
--- a/micromed_io/__init__.py
+++ b/micromed_io/__init__.py
@@ -1,2 +1,2 @@
 """Micromed IO module."""
-__version__ = "0.4.1"
+__version__ = "0.4.2"
diff --git a/pyproject.toml b/pyproject.toml
index 3ea7202..fbbecda 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "micromed-io"
-version = "0.4.1"
+version = "0.4.2"
 description = "A library to read, emulate, and forward Micromed data in standard formats"
 authors = ["Etienne de MONTALIVET <etienne.demontalivet@protonmail.com>"]
 readme = "README.rst"
diff --git a/tests/test_micromed_io.py b/tests/test_micromed_io.py
index c10974d..a5aa69d 100644
--- a/tests/test_micromed_io.py
+++ b/tests/test_micromed_io.py
@@ -5,4 +5,4 @@
 
 def test_version():
     """Test version"""
-    assert __version__ == "0.4.1"
+    assert __version__ == "0.4.2"