diff --git a/packages/taskr-swc/taskfile-swc.js b/packages/taskr-swc/taskfile-swc.js
index fb50e97c0..e65506c93 100644
--- a/packages/taskr-swc/taskfile-swc.js
+++ b/packages/taskr-swc/taskfile-swc.js
@@ -1,3 +1,6 @@
+// Based on
+// https://github.com/vercel/next.js/blob/canary/packages/next/taskfile-swc.js
+
 // taskr babel plugin with Babel 7 support
 // https://github.com/lukeed/taskr/pull/305