@@ -70,7 +70,11 @@ docker rmi $(docker images -q)
7070but `docker pull snoyberg/stackage:nightly` can also be run instead just to update the nightly image say.
7171
7272For a new GHC version you should also delete the cache directories on the stackage-build server to
73−force all packages to be rebuilt. See: [issue#746](https://github.com/fpco/stackage/issues/746).
73+force all packages to be rebuilt. See: [issue#746](https://github.com/fpco/stackage/issues/746). Eg:
74+```
75+rm -r nightly/work/builds/nightly/
76+```
77+This should also be done when moving the Nightly docker image to a new version of Ubuntu.
7478
7579## stackage-build server
7680