diff --git a/tp_herwig/Dockerfile b/tp_herwig/Dockerfile
index 97ff31da5cc846fee4ed91d60fbba2cfdbf89677..6edafca1041cba480b6a12ce97dc266ba27324e6 100644
--- a/tp_herwig/Dockerfile
+++ b/tp_herwig/Dockerfile
@@ -9,6 +9,8 @@ RUN apt-get update -y && \
         vim \
         pandoc \
         dvipng \
+        graphviz \
+        imagemagick \
         texlive-xetex \
         texlive \
         texlive-lang-german \