diff --git a/dev.yml b/dev.yml
index 55b764fe72830cb1f740afeffbf58b0d92a4e424..e5c291ccf87ebf298c7993f4fe5598ac542d0cef 100644
--- a/dev.yml
+++ b/dev.yml
@@ -14,7 +14,6 @@ dependencies:
   - docopt
   - docutils
   - jinja2
-  - graphviz
   - matplotlib
   - psutil
   - psycopg2