diff --git a/forestplot/__init__.py b/forestplot/__init__.py
index 8301345..7ce6452 100644
--- a/forestplot/__init__.py
+++ b/forestplot/__init__.py
@@ -1,5 +1,5 @@
 """State version and import user-facing functions."""
-VERSION = (0, 3, 1)
+VERSION = (0, 4, 0)
 
 __version__ = ".".join(map(str, VERSION))