diff --git a/lib/config/options/index.ts b/lib/config/options/index.ts
index 9d921620150a4e35d472daed90b5dc90873696b0..a90dcc2ee5014b9927def421c4a71eccb44a34aa 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:10.15.3',
+    default: 'ghcr.io/containerbase/sidecar:10.15.5',
     globalOnly: true,
   },
   {