diff --git a/lib/routes/dockerhub/utils.ts b/lib/routes/dockerhub/utils.ts
index 7e0accfe1cfb3..c2d23d74cc450 100644
--- a/lib/routes/dockerhub/utils.ts
+++ b/lib/routes/dockerhub/utils.ts
@@ -2,9 +2,10 @@ import md5 from '@/utils/md5';
 
 function hash(images) {
     const entries = Object.entries(images)
-        .map((x) => [`${x[1].os}/${x[1].architecture}`, x[1].digest])
-        .sort((a, b) => a[0] - b[0]);
-    return md5(entries.map((x) => x.join(',')).join('|'));
+        .map((x) => `${x[1].os}/${x[1].architecture},${x[1].digest}`)
+        .sort((a, b) => a.localeCompare(b));
+    const text = entries.join('|');
+    return md5(text);
 }
 
 export { hash };