diff --git a/docs/conf.py b/docs/conf.py
index b3f1f12..20aa038 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -16,7 +16,7 @@
 project = "multidms"
 copyright = "2023, Jared Galloway, Hugh Haddox"
 author = "Jared Galloway"
-release = "0.4.1"
+release = "0.4.2"
 
 needs_sphinx = "1.0"
 
diff --git a/multidms/__init__.py b/multidms/__init__.py
index 0dca474..dc6f4fa 100644
--- a/multidms/__init__.py
+++ b/multidms/__init__.py
@@ -47,7 +47,7 @@ class works to compose, compile, and optimize the model parameters
 
 __author__ = "Jared Galloway"
 __email__ = "jgallowa@fredhutch.org"
-__version__ = "0.4.1"
+__version__ = "0.4.2"
 __url__ = "https://github.com/matsengrp/multidms"
 
 from polyclonal.alphabets import AAS  # noqa: F401
diff --git a/pyproject.toml b/pyproject.toml
index edc49ec..a51722c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "multidms"
-version = "0.4.1"
+version = "0.4.2"
 description = "Joint modeling of multiple deep mutational scanning experiments."
 readme = "README.md"
 authors = [
@@ -106,7 +106,7 @@ repository = "https://github.com/matsengrp/multidms"
 packages = ["multidms"]
 
 [tool.bumpver]
-current_version = "0.4.1"
+current_version = "0.4.2"
 version_pattern = "MAJOR.MINOR.PATCH"
 commit_message = "bump version {old_version} -> {new_version}"
 commit = true