diff --git a/test.js b/test.js
deleted file mode 100755
index 77aa2c1..0000000
--- a/test.js
+++ /dev/null
@@ -1,13 +0,0 @@
-import fs from "fs";
-import test from "ava";
-import sass from "sass";
-
-test("tachyons-sass is able to be compiled by sass", (t) => {
-  t.plan(1);
-
-  const scss = fs.readFileSync("tachyons.scss", "utf8");
-
-  t.notThrows(() => {
-    sass.renderSync({ data: scss });
-  });
-});
diff --git a/test.mjs b/test.mjs
new file mode 100755
index 0000000..78bdc06
--- /dev/null
+++ b/test.mjs
@@ -0,0 +1,13 @@
+import fs from 'fs'
+import test from 'ava'
+import * as sass from 'sass'
+
+test('tachyons-sass is able to be compiled by sass', (t) => {
+  t.plan(1)
+
+  const scss = fs.readFileSync('tachyons.scss', 'utf8')
+
+  t.notThrows(() => {
+    sass.renderSync({ data: scss })
+  })
+})