diff --git a/base-buster/Dockerfile b/base-buster/Dockerfile
--- a/base-buster/Dockerfile
+++ b/base-buster/Dockerfile
@@ -25,6 +25,7 @@
   libsvn-dev \
   libsystemd-dev \
   maven \
+  mercurial \
   pkg-config \
   postgresql-11 \
   postgresql-client-11 \
@@ -32,6 +33,7 @@
   python3-dev \
   python3-pip \
   python3-venv \
+  subversion \
   yarn \
   zstd \
   && \