diff --git a/.sandstorm/Vagrantfile b/.sandstorm/Vagrantfile
index 20c01b6..bce38b6 100644
--- a/.sandstorm/Vagrantfile
+++ b/.sandstorm/Vagrantfile
@@ -9,9 +9,14 @@ VM_NAME = File.basename(File.dirname(File.dirname(__FILE__))) + "_sandstorm_#{Ti
 # Vagrantfile API/syntax version. Don't touch unless you know what you're doing!
 VAGRANTFILE_API_VERSION = "2"
 
+unless Vagrant::DEFAULT_SERVER_URL.frozen?
+  Vagrant::DEFAULT_SERVER_URL.replace('https://vagrantcloud.com')
+end
+
 Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
   # Base on the Sandstorm snapshots of the official Debian 8 (jessie) box.
-  config.vm.box = "sandstorm/debian-jessie64"
+  config.vm.box = "debian/contrib-stretch64"
+  config.vm.box_version = "9.3.0"
 
   if Vagrant.has_plugin?("vagrant-vbguest") then
     # vagrant-vbguest is a Vagrant plugin that upgrades
diff --git a/.sandstorm/global-setup.sh b/.sandstorm/global-setup.sh
index 219c770..d08e19d 100755
--- a/.sandstorm/global-setup.sh
+++ b/.sandstorm/global-setup.sh
@@ -8,7 +8,9 @@ set -euo pipefail
 CURL_OPTS="--silent --show-error"
 echo localhost > /etc/hostname
 hostname localhost
-
+# Install curl that is needed below.
+apt-get -y update
+apt-get install -y curl
 # The following line copies stderr through stderr to cat without accidentally leaving it in the
 # output file. Be careful when changing. See: https://github.com/sandstorm-io/vagrant-spk/pull/159
 curl $CURL_OPTS https://install.sandstorm.io/ 2>&1 > /host-dot-sandstorm/caches/install.sh | cat
diff --git a/.sandstorm/setup.sh b/.sandstorm/setup.sh
index 8b2334b..f77fd34 100755
--- a/.sandstorm/setup.sh
+++ b/.sandstorm/setup.sh
@@ -8,24 +8,6 @@ set -euo pipefail
 apt-get update
 apt-get install -y git
 
-### Download & compile capnproto and the Sandstorm getPublicId helper.
-
-# First, get capnproto from master and install it to
-# /usr/local/bin. This requires a C++ compiler. We opt for clang
-# because that's what Sandstorm is typically compiled with.
-if [ ! -e /usr/local/bin/capnp ] ; then
-    sudo DEBIAN_FRONTEND=noninteractive apt-get install -y -q clang autoconf pkg-config libtool
-    cd /tmp
-    curl -O https://capnproto.org/capnproto-c++-0.6.0.tar.gz
-    tar zxf capnproto-c++-0.6.0.tar.gz
-    cd capnproto-c++-0.6.0
-    ./configure
-    make -j6 check
-    make install
-fi
-
-### Download & compile capnproto and the Sandstorm getPublicId helper.
-
 # First, get capnproto from master and install it to
 # /usr/local/bin. This requires a C++ compiler. We opt for clang
 # because that's what Sandstorm is typically compiled with.
@@ -34,7 +16,7 @@ if [ ! -e /usr/local/bin/capnp ] ; then
     cd /tmp
     if [ ! -e capnproto ]; then git clone https://github.com/sandstorm-io/capnproto; fi
     cd capnproto
-    git checkout master
+    git checkout f73ac9f6667d7b87c395d23f3753dde63937cf00
     cd c++
     autoreconf -i
     ./configure
@@ -59,7 +41,7 @@ apt-get install -y python-pip asciidoctor
 pip install pygments
 
 cd /tmp
-wget https://github.com/spf13/hugo/releases/download/v0.20/hugo_0.20.7-64bit.deb -O hugo.deb
+wget https://github.com/gohugoio/hugo/releases/download/v0.49.2/hugo_0.49.2_Linux-64bit.deb -O hugo.deb
 dpkg -i hugo.deb
 rm hugo.deb
 # cd /tmp