diff --git a/lib/schema.js b/lib/schema.js
index e5cd341..fed01d1 100644
--- a/lib/schema.js
+++ b/lib/schema.js
@@ -1,3 +1,4 @@
+import { getChildDirectories, writeFile } from './io.js';
 import { log } from './log.js';
 
 const ctx = 'schema.js';