diff --git a/heroku-24/setup.sh b/heroku-24/setup.sh
index 644002ae..fcd425cc 100755
--- a/heroku-24/setup.sh
+++ b/heroku-24/setup.sh
@@ -215,6 +215,7 @@ apt-get install -y --no-install-recommends \
     locales \
     lsb-release \
     make \
+    mtools \
     netcat-openbsd \
     openssh-client \
     openssh-server \