diff --git a/Dockerfile b/Dockerfile
index a17053c4..91a710a5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -34,6 +34,7 @@ RUN apt-get update -y ;\
     apt-get install --no-install-recommends -y \
       bc \
       docker \
+      graphviz \
       hub \
       make \
       ncurses-base \