diff --git a/pyproject.toml b/pyproject.toml
index 0b9aeb3..597dc81 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "nsidc-metgenc"
-version = "0.3.0"
+version = "0.4.0"
 description = "The nsidc-metgen package enables data producers as well as Operations staff managing the data ingest workflow to create metadata files conforming to NASA's Common Metadata Repository UMM-G specification."
 authors = ["National Snow and Ice Data Center (NSIDC) <nsidc@nsidc.org>"]
 readme = "README.md"
@@ -33,7 +33,7 @@ mypy = "^1.11.1"
 bump-my-version = "^0.28.1"
 
 [tool.bumpversion]
-current_version = "0.3.0"
+current_version = "0.4.0"
 parse = "(?P<major>\\d+)\\.(?P<minor>\\d+)\\.(?P<patch>\\d+)"
 serialize = ["{major}.{minor}.{patch}"]
 search = "{current_version}"
diff --git a/src/nsidc/metgen/__init__.py b/src/nsidc/metgen/__init__.py
index c403315..a3d9f01 100644
--- a/src/nsidc/metgen/__init__.py
+++ b/src/nsidc/metgen/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "v0.3.0"
+__version__ = "v0.4.0"
 
 
 __all__ = ["__version__"]