diff --git a/lib/presets/grow.js b/lib/presets/grow.js
index c04d835..06021f9 100644
--- a/lib/presets/grow.js
+++ b/lib/presets/grow.js
@@ -27,7 +27,7 @@ const buildInFields = [
 const addBlueprints = async (config) => {
   const { typeConfig, locale } = config || {};
   return mapAsync(Object.entries(typeConfig || {}), async ([contentType, blueprint]) => {
-    const content = await yaml.convert(blueprint);
+    const content = await yaml.stringify(blueprint);
     const dir = await getContentTypeDirectory({ ...config, locale, contentType });
     const filepath = path.join(dir, '_blueprint.yaml');
     await fs.outputFile(filepath, content);