diff --git a/openedx/Dockerfile b/openedx/Dockerfile
index 1f759c4..b78bf08 100644
--- a/openedx/Dockerfile
+++ b/openedx/Dockerfile
@@ -8,7 +8,7 @@ RUN apt update && \
   # Global requirements
   apt install -y language-pack-en git python-virtualenv build-essential software-properties-common curl git-core libxml2-dev libxslt1-dev python-pip libmysqlclient-dev python-apt python-dev libxmlsec1-dev libfreetype6-dev swig gcc g++ && \
   # openedx requirements
-  apt install -y gettext gfortran libffi-dev libfreetype6-dev libgeos-dev libjpeg8-dev liblapack-dev libpng12-dev libxml2-dev libxmlsec1-dev libxslt1-dev nodejs npm ntp pkg-config && \
+  apt install -y gettext gfortran graphviz graphviz-dev libffi-dev libfreetype6-dev libgeos-dev libjpeg8-dev liblapack-dev libpng12-dev libxml2-dev libxmlsec1-dev libxslt1-dev nodejs npm ntp pkg-config && \
   # Our requirements
   apt install -y mysql-client