diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 27bb837e42..b1b6b65630 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.4.1
+current_version = 0.4.2
 commit = True
 tag = True
 
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 55cdbce003..0ec454796e 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -36,7 +36,7 @@
 author = 'GSL'
 
 # The full version, including alpha/beta/rc tags
-release = '0.4.1'
+release = '0.4.2'
 
 try:
     from setuptools_scm import get_version
diff --git a/mlos_bench/_version.py b/mlos_bench/_version.py
index a8e0856ef2..ced2f3b886 100644
--- a/mlos_bench/_version.py
+++ b/mlos_bench/_version.py
@@ -7,4 +7,4 @@
 """
 
 # NOTE: This should be managed by bumpversion.
-_VERSION = '0.4.1'
+_VERSION = '0.4.2'
diff --git a/mlos_core/_version.py b/mlos_core/_version.py
index 4d270079b6..650fc21537 100644
--- a/mlos_core/_version.py
+++ b/mlos_core/_version.py
@@ -7,4 +7,4 @@
 """
 
 # NOTE: This should be managed by bumpversion.
-_VERSION = '0.4.1'
+_VERSION = '0.4.2'