diff --git a/src/app/(dashboard)/page.tsx b/src/app/(dashboard)/page.tsx
index 12b78c1..ae5c46c 100644
--- a/src/app/(dashboard)/page.tsx
+++ b/src/app/(dashboard)/page.tsx
@@ -127,9 +127,6 @@ export default function DashboardPage() {
   }, [])
 
   const lastSync = stats?.lastSync
-  const syncStatusColor =
-    lastSync?.status === 'success' ? 'text-green-400' :
-    lastSync?.status === 'error'   ? 'text-red-400' : 'text-slate-400'
 
   return (
     <>
diff --git a/src/lib/shopifyMetafields.ts b/src/lib/shopifyMetafields.ts
index 997bf17..592444f 100644
--- a/src/lib/shopifyMetafields.ts
+++ b/src/lib/shopifyMetafields.ts
@@ -1,17 +1,5 @@
 import type { MetafieldDefinition, MetafieldResolution } from '@/types/creation'
 
-const API_VERSION = '2024-01'
-
-function getConfig() {
-  const domain = process.env.SHOPIFY_STORE_DOMAIN
-  const token = process.env.SHOPIFY_ADMIN_API_TOKEN
-  if (!domain || !token) throw new Error('SHOPIFY_STORE_DOMAIN et SHOPIFY_ADMIN_API_TOKEN requis')
-  return {
-    baseUrl: `https://${domain}/admin/api/${API_VERSION}`,
-    headers: { 'X-Shopify-Access-Token': token, 'Content-Type': 'application/json' },
-  }
-}
-
 export function normalizeMetafieldKey(header: string): string {
   return header
     .toLowerCase()
@@ -144,16 +132,46 @@ export async function setProductMetafield(
   value: string,
 ): Promise<void> {
   if (resolution.action === 'skip' || !value.trim()) return
-  const { baseUrl, headers } = getConfig()
-  const res = await fetch(`${baseUrl}/products/${shopifyProductId}/metafields.json`, {
+
+  const domain = process.env.SHOPIFY_STORE_DOMAIN
+  const token = process.env.SHOPIFY_ADMIN_API_TOKEN
+  if (!domain || !token) throw new Error('SHOPIFY_STORE_DOMAIN et SHOPIFY_ADMIN_API_TOKEN requis')
+
+  const gid = `gid://shopify/Product/${shopifyProductId}`
+  const type = resolution.type ?? 'single_line_text_field'
+
+  const mutation = `mutation MetafieldsSet($metafields: [MetafieldsSetInput!]!) {
+    metafieldsSet(metafields: $metafields) {
+      metafields { key namespace value }
+      userErrors { field message }
+    }
+  }`
+
+  const res = await fetch(`https://${domain}/admin/api/2024-01/graphql.json`, {
     method: 'POST',
-    headers,
+    headers: { 'X-Shopify-Access-Token': token, 'Content-Type': 'application/json' },
     body: JSON.stringify({
-      metafield: { namespace: resolution.namespace, key: resolution.key, value, type: resolution.type ?? 'single_line_text_field' },
+      query: mutation,
+      variables: {
+        metafields: [{
+          ownerId: gid,
+          namespace: resolution.namespace,
+          key: resolution.key,
+          value,
+          type,
+        }],
+      },
     }),
   })
+
   if (!res.ok) {
     const err = await res.text()
-    throw new Error(`Shopify set metafield error: ${res.status} — ${err}`)
+    throw new Error(`Shopify metafieldsSet HTTP error: ${res.status} — ${err}`)
+  }
+
+  const data = await res.json()
+  const errors = data.data?.metafieldsSet?.userErrors ?? []
+  if (errors.length > 0) {
+    throw new Error(`Shopify metafieldsSet error: ${errors.map((e: { message: string }) => e.message).join(', ')}`)
   }
 }