diff --git a/base/Dockerfile b/base/Dockerfile
index 8bb3ed0..691055b 100644
--- a/base/Dockerfile
+++ b/base/Dockerfile
@@ -1,41 +1,44 @@
 FROM jenkins/jnlp-slave
 LABEL maintainer="SoftwareHeritage"
 USER root
 
 RUN \
   export DEBIAN_FRONTEND=noninteractive && \
   apt-get update && \
   apt-get install -y apt-transport-https && \
   echo deb http://deb.debian.org/debian/ stretch-backports main > /etc/apt/sources.list.d/backports.list && \
   echo deb http://apt.postgresql.org/pub/repos/apt/ stretch-pgdg main > /etc/apt/sources.list.d/postgres.list && \
   wget --quiet -O /etc/apt/trusted.gpg.d/postgresql.asc https://www.postgresql.org/media/keys/ACCC4CF8.asc && \
   echo deb https://dl.yarnpkg.com/debian/ stable main > /etc/apt/sources.list.d/yarnpkg.list && \
   wget --quiet -O /etc/apt/trusted.gpg.d/yarnpkg.asc https://dl.yarnpkg.com/debian/pubkey.gpg && \
   echo deb https://artifacts.elastic.co/packages/7.x/apt stable main > /etc/apt/sources.list.d/elastic-7.x.list && \
   wget --quiet -O /etc/apt/trusted.gpg.d/elastic.asc https://artifacts.elastic.co/GPG-KEY-elasticsearch && \
+  echo deb http://www.apache.org/dist/cassandra/debian 311x main > /etc/apt/sources.list.d/cassandra.list && \
+  wget --quiet -O /etc/apt/trusted.gpg.d/elastic.asc https://www.apache.org/dist/cassandra/KEYS && \
   apt-get update && \
   apt-get upgrade -y && \
   apt-get install -y -t stretch-backports \
     nodejs && \
   apt-get install -y \
     arcanist \
     build-essential \
+    cassandra \
     curl \
     jq \
     libffi-dev \
     libsvn-dev \
     libsystemd-dev \
     pkg-config \
     postgresql-10 \
     postgresql-client-10 \
     postgresql-server-dev-10 \
     elasticsearch \
     python3-dev \
     python3-pip \
     python3-venv \
     yarn \
   && \
   apt-get clean && \
   rm -rf /var/lib/apt/lists/*
 
 USER jenkins