On Sun, Jun 17, 2018 at 06:09:19PM -0400, George Clemmer wrote:
> *  gnu/packages/emacs.scm (emacs-graphviz-dot-mode): update to 0.3.11
>    for compatibility w/ Emacs 26.1

Thanks! Pushed as 067a113a31880161af65c623847f3ac35a303a53