diff --git a/Makefile b/Makefile
index d1ac7238..b9a93913 100644
--- a/Makefile
+++ b/Makefile
@@ -16,3 +16,27 @@ devtest:
     # Unit testing with the -x option, aborts testing after first failure
     # Useful for development when tests are long
 	py.test -x --pyargs cloudknot --cov-report term-missing --cov=cloudknot
+
+clean: clean-build clean-pyc clean-test ## remove all build, test, coverage and Python artifacts
+
+clean-build: ## remove build artifacts
+	rm -fr build/
+	rm -fr dist/
+	rm -fr .eggs/
+	find . -name '*.egg-info' -exec rm -fr {} +
+	find . -name '*.egg' -exec rm -f {} +
+
+clean-pyc: ## remove Python file artifacts
+	find . -name '*.pyc' -exec rm -f {} +
+	find . -name '*.pyo' -exec rm -f {} +
+	find . -name '*~' -exec rm -f {} +
+	find . -name '__pycache__' -exec rm -fr {} +
+
+release: dist ## Package and upload a release
+	twine upload dist/*
+
+dist: clean ## Build source and wheel package
+	python setup.py sdist
+	python setup.py bdist_wheel
+	ls -l dist
+
diff --git a/cloudknot/version.py b/cloudknot/version.py
index c18fd0b9..d8fd0c12 100644
--- a/cloudknot/version.py
+++ b/cloudknot/version.py
@@ -4,10 +4,10 @@
 
 # Format expected by setup.py and doc/source/conf.py: string of form "X.Y.Z"
 _version_major = 0
-_version_minor = 4
-_version_micro = ''  # use '' for first of series, number for 1 and above
-_version_extra = 'dev'
-# _version_extra = ''  # Uncomment this for full releases
+_version_minor = 3
+_version_micro = 1  # use '' for first of series, number for 1 and above
+# _version_extra = 'dev'
+_version_extra = ''  # Uncomment this for full releases
 
 # Construct full version string from these.
 _ver = [_version_major, _version_minor]