diff --git a/bunfig.toml b/bunfig.toml
index 11fff1e..997bd34 100644
--- a/bunfig.toml
+++ b/bunfig.toml
@@ -3,3 +3,4 @@ exact = true
 
 [test]
 root = "./do-not-run-tests-from-root"
+preload = ["./packages/core/test/setup.ts"]