diff --git a/lib/default-release-types.js b/lib/default-release-types.js
index 937b01a0..4ef997c9 100644
--- a/lib/default-release-types.js
+++ b/lib/default-release-types.js
@@ -3,4 +3,4 @@
  *
  * @type {Array}
  */
-module.exports = ['major', 'premajor', 'minor', 'preminor', 'patch', 'prepatch', 'prerelease'];
+module.exports = ['major', 'premajor', 'minor', 'preminor', 'patch', 'prepatch', 'prerelease', false, null];