diff --git a/pyproject.toml b/pyproject.toml
index 99d59ac..aade005 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,5 @@
 pyproject.toml — placeholder
 
 # update 9 (2026-04)
+
+# update 22 (2026-04)