diff --git a/src/howldream/__init__.py b/src/howldream/__init__.py
index 60f39bb..e0ebf50 100644
--- a/src/howldream/__init__.py
+++ b/src/howldream/__init__.py
@@ -1,3 +1,3 @@
 """Controlled experiments. Dream output is data, not authority."""
 
-__version__ = "0.4.4"
+__version__ = "0.4.5"
diff --git a/tests/test_interop_descriptor.py b/tests/test_interop_descriptor.py
index b01cdfb..10b3f1c 100644
--- a/tests/test_interop_descriptor.py
+++ b/tests/test_interop_descriptor.py
@@ -35,6 +35,19 @@ def test_descriptor_shape(monkeypatch, capsys):
             assert SCHEMA_ID.match(schema), schema
 
 
+def test_version_matches_pyproject():
+    from pathlib import Path
+
+    try:
+        import tomllib
+    except ImportError:
+        import tomli as tomllib
+    pyproject_path = Path(__file__).resolve().parent.parent / "pyproject.toml"
+    with open(pyproject_path, "rb") as f:
+        data = tomllib.load(f)
+    assert __version__ == data["project"]["version"]
+
+
 def test_every_subcommand_and_flag_is_described(monkeypatch, capsys):
     described = {
         tuple(c["path"]): set(c["flags"]) for c in descriptor(monkeypatch, capsys)["commands"]