diff --git a/readme.md b/readme.md
index 9bbc770f..2d5709d7 100644
--- a/readme.md
+++ b/readme.md
@@ -83,7 +83,11 @@ require('@zeit/ncc')('/path/to/input', {
   watch: false, // default
   v8cache: false, // default
   quiet: false, // default
-  debugLog = false // default
+  debugLog = false, // default
+  // https://webpack.js.org/configuration/resolve/#resolvealias
+  resolveAlias: {}, // default
+  // https://webpack.js.org/configuration/resolve/#resolvemodules
+  resolveModules: [] // default
 }).then(({ code, map, assets }) => {
   console.log(code);
   // Assets is an object of asset file names to { source, permissions, symlinks }
diff --git a/src/index.js b/src/index.js
index 9c250b74..2dd8dad0 100644
--- a/src/index.js
+++ b/src/index.js
@@ -45,7 +45,9 @@ module.exports = (
     v8cache = false,
     filterAssetBase = process.cwd(),
     quiet = false,
-    debugLog = false
+    debugLog = false,
+    resolveAlias = {},
+    resolveModules = []
   } = {}
 ) => {
   if (!quiet) {
@@ -128,10 +130,12 @@ module.exports = (
       libraryTarget: "commonjs2"
     },
     resolve: {
+      alias: resolveAlias,
       extensions: SUPPORTED_EXTENSIONS,
       // webpack defaults to `module` and `main`, but that's
       // not really what node.js supports, so we reset it
       mainFields: ["main"],
+      modules: ['node_modules'].concat(resolveModules),
       plugins: resolvePlugins
     },
     // https://github.com/zeit/ncc/pull/29#pullrequestreview-177152175