diff --git a/README_SETUP.md b/README_SETUP.md
index e409edaa9612340490f8cf8642201a5e1812d867..3352a5385a304f1095c1d78aee58ddef5341a0bd 100644
--- a/README_SETUP.md
+++ b/README_SETUP.md
@@ -35,3 +35,9 @@
   this with caution!!!** If you did not backup your database, **everything will
   be lost afterwards.** And no, there is *no* additional prompt to ask if you
   are sure.  If you `make drop-...`, you *actually* delete the database.
+
+## Unit tests
+
+* We use [MyTAP-1.0](https://hepabolu.github.io/mytap/) for unit tests.
+* Tests are in `tests/test_*.sql`.
+* Run `make test`.