diff --git a/automation_engine/version.py b/automation_engine/version.py
index ae0ac96..daa8801 100644
--- a/automation_engine/version.py
+++ b/automation_engine/version.py
@@ -1,2 +1,2 @@
 """Automation Engine version."""
-__version__ = "0.3.0"
+__version__ = "0.4.0a1"
diff --git a/pyproject.toml b/pyproject.toml
index f1bf126..2e9ebfc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "automation_engine"
-version = "0.3.1"
+version = "0.4.0a1"
 description = "Automation Engine powered by MQTT"
 authors = ["Dan Trickey <contact@trickey.io>"]
 license = "MIT"