diff --git a/docs/hub.md b/docs/hub.md
index fa90be1f8..e2eaf915b 100644
--- a/docs/hub.md
+++ b/docs/hub.md
@@ -9,12 +9,13 @@ generally with tags based on the image contents.
 - `mobylinux/alpine-bios` for building BIOS image
 - `mobylinux/alpine-efi` for building efi images
 - `mobylinux/alpine-qemu` for Qemu eg for the tests
-- `mobylinux/debian-build-kernel` for the kernel builds while we cannot use Alpine
+
 
 The `Dockerfile`s for these are under `alpine/base`. To update, modify the `Dockerfile` if you wish
 to change the packages used, and `repositories` if needed, and run `make`. This will push the image
-to Docker Hub if it has changed, and update `packages` with a list of the current versions. If the
-image has changed, update the other Dockerfiles with this base image to use this new tag.
+to Docker Hub if it has changed.
+
+To update `packages` to use the new version, update their respective `Dockerfile`. Make sure you also update the `# TAG: ` comment at the start of the file.  Both the `TAG` and the `sha256` are printed out when pushing the update base to the hub.
 
 For example, `alpine/base/alpine-base` is the image used to build the Moby image itself, which is
 used in `alpine/Dockerfile`. The uploaded tags can be seen at [Docker Hub](https://hub.docker.com/r/mobylinux/alpine-base/tags/).