Add graphviz in .travis.yml

5 years ago · 53f89ad6eb
1 changed files with 1 additions and 0 deletions
--- a/.travis.yml
+++ b/.travis.yml
@ -9,6 +9,7 @@ addons:
      - python-lxml # because pip installation is slow
      - pdftk
      - libreoffice
+      - graphviz

 language: python