diff --git a/src/highlight.js b/src/highlight.js
index 7e31325..62b7b9f 100644
--- a/src/highlight.js
+++ b/src/highlight.js
@@ -41,4 +41,4 @@ const sheet = {
 };
 
 module.exports = (s) =>
-  emphasize.highlight('js', s, sheet).value;
+  emphasize.highlight('ts', s, sheet).value;