diff --git a/TODO b/TODO
index 616360b..368fa3d 100644
--- a/TODO
+++ b/TODO
@@ -68,3 +68,14 @@ Created: 2025-05-04
 Description: implement a simple circular buffer
 
 ---
+
+ID: 3
+Type: bugfix
+Title: move unit tests to subdirectory
+Status: open
+Priority: high
+Created: 2025-05-04
+Description: move the unit test suites to a unit/ subdirectory so that
+             integration tests and benchmarks can be cleanly separated
+
+---