diff --git a/lib/config/options/index.ts b/lib/config/options/index.ts
index 91d41e1070d4a2..253f2443328f4a 100644
--- a/lib/config/options/index.ts
+++ b/lib/config/options/index.ts
@@ -455,7 +455,7 @@ const options: RenovateOptions[] = [
     description:
       'Change this value to override the default Renovate sidecar image.',
     type: 'string',
-    default: 'ghcr.io/containerbase/sidecar:10.3.5',
+    default: 'ghcr.io/containerbase/sidecar:10.3.8',
     globalOnly: true,
   },
   {