diff --git a/.eslintrc.json b/.eslintrc.json
index cb9c786..3a97d05 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -1,10 +1,10 @@
 {
   "parserOptions": {
-    "ecmaVersion": 5
+    "ecmaVersion": 6,
+    "sourceType": "module"
   },
   "extends": "eslint:recommended",
   "env": {
-    "commonjs": true,
     "browser": true
   },
   "rules": {
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 063845e..06ed895 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,10 +13,12 @@ jobs:
       - uses: actions/checkout@v2
 
       - uses: purescript-contrib/setup-purescript@main
+        with:
+          purescript: "unstable"
 
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2
         with:
-          node-version: "10"
+          node-version: "14"
 
       - name: Install dependencies
         run: |
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7a37aff..482d00c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@ Notable changes to this project are documented in this file. The format is based
 ## [Unreleased]
 
 Breaking changes:
+- Migrate FFI to ES modules (#17 by @JordanMartinez)
 
 New features:
 
diff --git a/bower.json b/bower.json
index d959908..a4ac44f 100644
--- a/bower.json
+++ b/bower.json
@@ -15,7 +15,7 @@
     "package.json"
   ],
   "dependencies": {
-    "purescript-nullable": "^5.0.0",
-    "purescript-web-events": "^3.0.0"
+    "purescript-nullable": "main",
+    "purescript-web-events": "master"
   }
 }
diff --git a/package.json b/package.json
index 1c67b54..4ea39f9 100644
--- a/package.json
+++ b/package.json
@@ -6,8 +6,8 @@
   },
   "devDependencies": {
     "eslint": "^7.15.0",
-    "pulp": "^15.0.0",
-    "purescript-psa": "^0.8.0",
+    "pulp": "16.0.0-0",
+    "purescript-psa": "^0.8.2",
     "rimraf": "^3.0.2"
   }
 }
diff --git a/src/Web/Storage/Event/StorageEvent.js b/src/Web/Storage/Event/StorageEvent.js
index fd2ccf1..91aea14 100644
--- a/src/Web/Storage/Event/StorageEvent.js
+++ b/src/Web/Storage/Event/StorageEvent.js
@@ -1,21 +1,19 @@
-"use strict";
-
-exports._key = function (storage) {
+export function _key(storage) {
   return storage.key;
-};
+}
 
-exports._oldValue = function (storage) {
+export function _oldValue(storage) {
   return storage.oldValue;
-};
+}
 
-exports._newValue = function (storage) {
+export function _newValue(storage) {
   return storage.newValue;
-};
+}
 
-exports.url = function (storage) {
+export function url(storage) {
   return storage.url;
-};
+}
 
-exports._storageArea = function (storage) {
+export function _storageArea(storage) {
   return storage.storageArea;
-};
+}
diff --git a/src/Web/Storage/Storage.js b/src/Web/Storage/Storage.js
index 8d51753..16f9c3a 100644
--- a/src/Web/Storage/Storage.js
+++ b/src/Web/Storage/Storage.js
@@ -1,28 +1,26 @@
-"use strict";
-
-exports.length = function (storage) {
+export function length(storage) {
   return function () {
     return storage.length;
   };
-};
+}
 
-exports._key = function (index) {
+export function _key(index) {
   return function (storage) {
     return function () {
       return storage.key(index);
     };
   };
-};
+}
 
-exports._getItem = function (key) {
+export function _getItem(key) {
   return function (storage) {
     return function () {
       return storage.getItem(key);
     };
   };
-};
+}
 
-exports.setItem = function (key) {
+export function setItem(key) {
   return function (value) {
     return function (storage) {
       return function () {
@@ -30,18 +28,18 @@ exports.setItem = function (key) {
       };
     };
   };
-};
+}
 
-exports.removeItem = function (key) {
+export function removeItem(key) {
   return function (storage) {
     return function () {
       storage.removeItem(key);
     };
   };
-};
+}
 
-exports.clear = function (storage) {
+export function clear(storage) {
   return function () {
     storage.clear();
   };
-};
+}