diff --git a/lib/config/options/index.ts b/lib/config/options/index.ts
index a866567faca4d1e13173cc32aa56c6539fd90b5d..3726c188d12fd1afc6e97941038f2255ded0ea0c 100644
--- a/lib/config/options/index.ts
+++ b/lib/config/options/index.ts
@@ -516,7 +516,7 @@ const options: RenovateOptions[] = [
     description:
       'Change this value to override the default Renovate sidecar image.',
     type: 'string',
-    default: 'ghcr.io/containerbase/sidecar:13.8.3',
+    default: 'ghcr.io/containerbase/sidecar:13.8.4',
     globalOnly: true,
   },
   {