diff --git a/package-lock.json b/package-lock.json
index 4aa6ac9..33e2411 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,24 +4,6 @@
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@@ -113,6 +95,105 @@
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@@ -373,6 +473,15 @@
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@@ -794,6 +893,27 @@
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@@ -1032,6 +1153,72 @@
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@@ -3149,6 +3339,12 @@
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@@ -4688,6 +4869,74 @@
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+      "version": "1.16.2",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.16.2.tgz",
+      "integrity": "sha512-UAZxaQvH0klYZdF+90xv9nGb+m4p8jdoaow1VL5/RzDK/gN/4CjvaMmJNcOIv1/+gtzswKhAg/467mzF0sLpAg==",
+      "dev": true,
+      "requires": {
+        "@types/estree": "0.0.39",
+        "@types/node": "^12.0.8",
+        "acorn": "^6.1.1"
+      },
+      "dependencies": {
+        "acorn": {
+          "version": "6.1.1",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.1.1.tgz",
+          "integrity": "sha512-jPTiwtOxaHNaAPg/dmrJ/beuzLRnXtB0kQPQ8JpotKJgTB6rX6c8mlf315941pyjBSaPg8NHXS9fhP4u17DpGA==",
+          "dev": true
+        }
+      }
+    },
+    "rollup-plugin-babel": {
+      "version": "4.3.3",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-babel/-/rollup-plugin-babel-4.3.3.tgz",
+      "integrity": "sha512-tKzWOCmIJD/6aKNz0H1GMM+lW1q9KyFubbWzGiOG540zxPPifnEAHTZwjo0g991Y+DyOZcLqBgqOdqazYE5fkw==",
+      "dev": true,
+      "requires": {
+        "@babel/helper-module-imports": "^7.0.0",
+        "rollup-pluginutils": "^2.8.1"
+      }
+    },
+    "rollup-plugin-node-resolve": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.1.0.tgz",
+      "integrity": "sha512-2hwwHNj0s8UEtUNT+lJq8rFWEznP7yJm3GCHBicadF6hiNX1aRARRZIjz2doeTlTGg/hOvJr4C/8+3k9Y/J5Hg==",
+      "dev": true,
+      "requires": {
+        "@types/resolve": "0.0.8",
+        "builtin-modules": "^3.1.0",
+        "is-module": "^1.0.0",
+        "resolve": "^1.11.1",
+        "rollup-pluginutils": "^2.8.1"
+      },
+      "dependencies": {
+        "builtin-modules": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/builtin-modules/-/builtin-modules-3.1.0.tgz",
+          "integrity": "sha512-k0KL0aWZuBt2lrxrcASWDfwOLMnodeQjodT/1SxEQAXsHANgo6ZC/VEaSEHCXt7aSTZ4/4H5LKa+tBXmW7Vtvw==",
+          "dev": true
+        },
+        "resolve": {
+          "version": "1.11.1",
+          "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.1.tgz",
+          "integrity": "sha512-vIpgF6wfuJOZI7KKKSP+HmiKggadPQAdsp5HiC1mvqnfp0gF1vdwgBWZIdrVft9pgqoMFQN+R7BSWZiBxx+BBw==",
+          "dev": true,
+          "requires": {
+            "path-parse": "^1.0.6"
+          }
+        }
+      }
+    },
+    "rollup-pluginutils": {
+      "version": "2.8.1",
+      "resolved": "https://registry.npmjs.org/rollup-pluginutils/-/rollup-pluginutils-2.8.1.tgz",
+      "integrity": "sha512-J5oAoysWar6GuZo0s+3bZ6sVZAC0pfqKz68De7ZgDi5z63jOVZn1uJL/+z1jeKHNbGII8kAyHF5q8LnxSX5lQg==",
+      "dev": true,
+      "requires": {
+        "estree-walker": "^0.6.1"
+      }
+    },
     "run-async": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/run-async/-/run-async-2.3.0.tgz",
@@ -4797,12 +5046,6 @@
       "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=",
       "dev": true
     },
-    "slash": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/slash/-/slash-2.0.0.tgz",
-      "integrity": "sha512-ZYKh3Wh2z1PpEXWr0MpSBZ0V6mZHAQfYevttO11c51CaWjGTaadiKZ+wVt1PbMlDV5qhMFslpZCemhwOK7C89A==",
-      "dev": true
-    },
     "slice-ansi": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/slice-ansi/-/slice-ansi-2.0.0.tgz",
@@ -5154,6 +5397,7 @@
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
       "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
       "dev": true,
+      "optional": true,
       "requires": {
         "code-point-at": "^1.0.0",
         "is-fullwidth-code-point": "^1.0.0",
@@ -5174,6 +5418,7 @@
       "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
       "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
       "dev": true,
+      "optional": true,
       "requires": {
         "ansi-regex": "^2.0.0"
       }
@@ -5625,7 +5870,8 @@
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.3.tgz",
       "integrity": "sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "yeast": {
       "version": "0.1.2",
diff --git a/package.json b/package.json
index 88802b6..fe9fde4 100644
--- a/package.json
+++ b/package.json
@@ -11,20 +11,16 @@
   ],
   "scripts": {
     "clean": "rm -rf dist",
-    "lint": "eslint combobox-nav.js test/ && flow check",
+    "lint": "github-lint",
     "prebuild": "npm run clean && npm run lint && mkdir dist",
-    "build-umd": "BABEL_ENV=umd babel combobox-nav.js -o dist/combobox-nav.umd.js && cp combobox-nav.js.flow dist/combobox-nav.umd.js.flow",
-    "build-esm": "BABEL_ENV=esm babel combobox-nav.js -o dist/combobox-nav.esm.js && cp combobox-nav.js.flow dist/combobox-nav.esm.js.flow",
-    "build": "npm run build-umd && npm run build-esm",
+    "build": "rollup -c && cp src/combobox-nav.js.flow dist/combobox-nav.esm.js.flow && cp src/combobox-nav.js.flow dist/combobox-nav.umd.js.flow",
     "test": "karma start test/karma.config.js",
     "pretest": "npm run build",
     "prepublishOnly": "npm run build"
   },
   "devDependencies": {
-    "@babel/cli": "^7.2.3",
     "@babel/core": "^7.2.2",
-    "@babel/preset-env": "^7.2.3",
-    "@babel/preset-flow": "^7.0.0",
+    "babel-preset-github": "^3.2.0",
     "chai": "^4.2.0",
     "eslint": "^5.12.0",
     "eslint-plugin-github": "^1.7.2",
@@ -34,6 +30,9 @@
     "karma-chrome-launcher": "^2.2.0",
     "karma-mocha": "^1.3.0",
     "karma-mocha-reporter": "^2.2.5",
-    "mocha": "^5.2.0"
+    "mocha": "^5.2.0",
+    "rollup": "^1.12.3",
+    "rollup-plugin-babel": "^4.3.2",
+    "rollup-plugin-node-resolve": "^5.0.0"
   }
 }
diff --git a/prettier.config.js b/prettier.config.js
index 7d9937d..ce8945e 100644
--- a/prettier.config.js
+++ b/prettier.config.js
@@ -1 +1,2 @@
+/* @flow */
 module.exports = require('eslint-plugin-github/prettier.config')
diff --git a/rollup.config.js b/rollup.config.js
new file mode 100644
index 0000000..defa626
--- /dev/null
+++ b/rollup.config.js
@@ -0,0 +1,28 @@
+/* @flow strict */
+
+import babel from 'rollup-plugin-babel'
+import resolve from 'rollup-plugin-node-resolve'
+
+const pkg = require('./package.json')
+
+export default {
+  input: 'src/combobox-nav.js',
+  output: [
+    {
+      file: pkg['module'],
+      format: 'es'
+    },
+    {
+      file: pkg['main'],
+      format: 'umd',
+      name: 'comboboxNav',
+      exports: 'named'
+    }
+  ],
+  plugins: [
+    resolve(),
+    babel({
+      presets: ['github']
+    })
+  ]
+}
diff --git a/combobox-nav.js b/src/combobox-nav.js
similarity index 98%
rename from combobox-nav.js
rename to src/combobox-nav.js
index 333c5af..1386d2b 100644
--- a/combobox-nav.js
+++ b/src/combobox-nav.js
@@ -1,5 +1,7 @@
 /* @flow strict */
 
+import {scrollTo} from './scroll'
+
 export function install(input: HTMLTextAreaElement | HTMLInputElement, list: HTMLElement): void {
   input.addEventListener('compositionstart', trackComposition)
   input.addEventListener('compositionend', trackComposition)
@@ -103,6 +105,7 @@ export function navigate(
     if (target === el) {
       input.setAttribute('aria-activedescendant', target.id)
       target.setAttribute('aria-selected', 'true')
+      scrollTo(list, target)
     } else {
       el.setAttribute('aria-selected', 'false')
     }
diff --git a/combobox-nav.js.flow b/src/combobox-nav.js.flow
similarity index 100%
rename from combobox-nav.js.flow
rename to src/combobox-nav.js.flow
diff --git a/src/scroll.js b/src/scroll.js
new file mode 100644
index 0000000..5b741a8
--- /dev/null
+++ b/src/scroll.js
@@ -0,0 +1,15 @@
+/* @flow strict */
+
+export function scrollTo(container: HTMLElement, target: HTMLElement) {
+  if (!inViewport(container, target)) {
+    container.scrollTop = target.offsetTop
+  }
+}
+
+function inViewport(container: HTMLElement, element: HTMLElement): boolean {
+  const scrollTop = container.scrollTop
+  const containerBottom = scrollTop + container.clientHeight
+  const top = element.offsetTop
+  const bottom = top + element.clientHeight
+  return top >= scrollTop && bottom <= containerBottom
+}