# Flux ## How to Update To update the version of upstream manifests used by a given function: 1. Update the versions (git refs) specified in the `dependencies` section of the Kptfile at the root of the function. 2. Run [`kpt pkg sync .`](https://github.com/GoogleContainerTools/kpt/blob/master/site/content/en/reference/pkg/sync/_index.md) from the root of the function. 3. Update any container image references in VariableCatalogues to match these new versions.