diff --git a/config-default.js b/config-default.js
index fdf2f036..c13f9168 100644
--- a/config-default.js
+++ b/config-default.js
@@ -51,6 +51,8 @@ module.exports = {
     // the shell to run when spawning a new session (i.e. /usr/local/bin/fish)
     // if left empty, your system's login shell will be used by default
     shell: ''
+
+    // for advanced config flags please refer to https://hyperterm.org/#cfg
   },
 
   // a list of plugins to fetch and install from npm
diff --git a/plugins.js b/plugins.js
index 89e3dca5..3c2510b2 100644
--- a/plugins.js
+++ b/plugins.js
@@ -191,6 +191,8 @@ function toDependencies (plugins) {
 
 function install (fn) {
   shellEnv().then((env) => {
+    let registry = exports.getDecoratedConfig().npmRegistry;
+    if (registry) env.NPM_CONFIG_REGISTRY = registry;
     exec('npm prune && npm install --production', {
       cwd: path,
       env: env