diff --git a/lib/config/options/index.ts b/lib/config/options/index.ts
index 3bec15eefb2d24db1284ce3fd95a77bbb2fe70dd..62a8c89ec25b926d442cbf0ba771785d0d3fa777 100644
--- a/lib/config/options/index.ts
+++ b/lib/config/options/index.ts
@@ -514,7 +514,7 @@ const options: RenovateOptions[] = [
     description:
       'Change this value to override the default Renovate sidecar image.',
     type: 'string',
-    default: 'ghcr.io/containerbase/sidecar:10.12.0',
+    default: 'ghcr.io/containerbase/sidecar:10.15.3',
     globalOnly: true,
   },
   {