diff --git a/test/mocha.opts b/test/mocha.opts
index 73fb836..06b9c7e 100644
--- a/test/mocha.opts
+++ b/test/mocha.opts
@@ -1,4 +1,4 @@
---require ts-node/register
+--import tsx
 --watch-extensions ts
 --recursive
 --reporter spec