diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 000000000..35b0cd787
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "app/javascript/themes/mastodon-go"]
+	path = app/javascript/themes/mastodon-go
+	url = https://github.com/marrus-sh/mastodon-go
diff --git a/Vagrantfile b/Vagrantfile
index 0c21bed68..351ab5cfa 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -83,7 +83,7 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
 
   config.vm.provider :virtualbox do |vb|
     vb.name = "mastodon"
-    vb.customize ["modifyvm", :id, "--memory", "2048"]
+    vb.customize ["modifyvm", :id, "--memory", "4096"]
 
     # Disable VirtualBox DNS proxy to skip long-delay IPv6 resolutions.
     # https://github.com/mitchellh/vagrant/issues/1172
diff --git a/app/javascript/themes/mastodon-go b/app/javascript/themes/mastodon-go
new file mode 160000
index 000000000..1ba394d1d
--- /dev/null
+++ b/app/javascript/themes/mastodon-go
@@ -0,0 +1 @@
+Subproject commit 1ba394d1d7c38fd92159548824d1ba42719df6c3