diff --git a/sphinx/Dockerfile b/sphinx/Dockerfile
index fc98ac3..97086ec 100644
--- a/sphinx/Dockerfile
+++ b/sphinx/Dockerfile
@@ -1,20 +1,21 @@
 ARG REGISTRY=swh-jenkins
 FROM $REGISTRY/base
 
 USER root
 RUN DEBIAN_FRONTEND=noninteractive apt-get update && \
   apt-get install -y --no-install-recommends \
     crudini \
     dia \
     graphviz \
     inkscape \
     libffi-dev \
+    maven \
     make \
     myrepos \
     plantuml \
     postgresql-autodoc \
     rsync \
     tox \
   && rm -rf /var/lib/apt/lists/*
 
 USER jenkins