diff --git a/src/frameport/_version.py b/src/frameport/_version.py
index bc001d9..ff1a8f0 100644
--- a/src/frameport/_version.py
+++ b/src/frameport/_version.py
@@ -1,2 +1,2 @@
 # The FramePort version: the single source (pyproject reads it via hatch; CI checks a release tag matches it).
-__version__ = "0.3.4"
+__version__ = "0.4.0"