diff --git a/renovate.json b/renovate.json
index 21f7a45c8c35f79217b35b78a05a216462f8247d..b7b7c8fca4bb4b1fc77bab2ca7712582ee21d77b 100644
--- a/renovate.json
+++ b/renovate.json
@@ -63,5 +63,6 @@
       "matchPaths": ["images/kos/**"],
       "extends": ["docker:pinDigests"]
     }
-  ]
+  ],
+  "postUpdateOptions": ["helmUpdateSubChartArchives"]
 }