diff --git a/thisnotthat/_version.py b/thisnotthat/_version.py
index 6a35e85..6a9beea 100644
--- a/thisnotthat/_version.py
+++ b/thisnotthat/_version.py
@@ -1 +1 @@
-__version__ = "0.3"
+__version__ = "0.4.0"