missing private gists when using graphql

Using the v3 API I can fetch private gists for the currently authenticated user with something like:

curl -u${AUTH} https://api.github.com/gists 

Anyone know how to get private gists when using GraphQL?

Trying with:

curl -u${AUTH} https://api.github.com/graphql --data '{"query": "{ viewer { gists(first: 50) { totalCount } } }"}'

only includes public gists.