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 6affe6a..49a9376 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 (#12 by @JordanMartinez)
 
 New features:
 
diff --git a/bower.json b/bower.json
index 4ba6908..563cd8d 100644
--- a/bower.json
+++ b/bower.json
@@ -15,7 +15,7 @@
     "package.json"
   ],
   "dependencies": {
-    "purescript-arraybuffer-types": "^3.0.0",
-    "purescript-web-file": "^3.0.0"
+    "purescript-arraybuffer-types": "main",
+    "purescript-web-file": "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/Socket/Event/CloseEvent.js b/src/Web/Socket/Event/CloseEvent.js
index 88734db..d52f621 100644
--- a/src/Web/Socket/Event/CloseEvent.js
+++ b/src/Web/Socket/Event/CloseEvent.js
@@ -1,13 +1,11 @@
-"use strict";
-
-exports.code = function (e) {
+export function code(e) {
   return e.code;
-};
+}
 
-exports.reason = function (e) {
+export function reason(e) {
   return e.reason;
-};
+}
 
-exports.wasClean = function (e) {
+export function wasClean(e) {
   return e.wasClean;
-};
+}
diff --git a/src/Web/Socket/Event/MessageEvent.js b/src/Web/Socket/Event/MessageEvent.js
index 62472b6..a4fea20 100644
--- a/src/Web/Socket/Event/MessageEvent.js
+++ b/src/Web/Socket/Event/MessageEvent.js
@@ -1,13 +1,11 @@
-"use strict";
-
-exports.data_ = function (e) {
+export function data_(e) {
   return e.data;
-};
+}
 
-exports.origin = function (e) {
+export function origin(e) {
   return e.origin;
-};
+}
 
-exports.lastEventId = function (e) {
+export function lastEventId(e) {
   return e.lastEventId;
-};
+}
diff --git a/src/Web/Socket/WebSocket.js b/src/Web/Socket/WebSocket.js
index 77405ab..9f5fc4d 100644
--- a/src/Web/Socket/WebSocket.js
+++ b/src/Web/Socket/WebSocket.js
@@ -1,67 +1,65 @@
-"use strict";
-
-exports.create = function (url) {
+export function create(url) {
   return function (protocols) {
     return function () {
       return new WebSocket(url, protocols);
     };
   };
-};
+}
 
-exports.url = function (ws) {
+export function url(ws) {
   return function () {
     return ws.url;
   };
-};
+}
 
-exports.readyStateImpl = function (ws) {
+export function readyStateImpl(ws) {
   return function () {
     return ws.readyState;
   };
-};
+}
 
-exports.bufferedAmount = function (ws) {
+export function bufferedAmount(ws) {
   return function () {
     return ws.bufferedAmount;
   };
-};
+}
 
-exports.extensions = function (ws) {
+export function extensions(ws) {
   return function () {
     return ws.extensions;
   };
-};
+}
 
-exports.protocol = function (ws) {
+export function protocol(ws) {
   return function () {
     return ws.protocol;
   };
-};
+}
 
-exports.close = function (ws) {
+export function close(ws) {
   return function () {
     return ws.close();
   };
-};
+}
 
-exports.getBinaryTypeImpl = function (ws) {
+export function getBinaryTypeImpl(ws) {
   return function () {
     return ws.binaryType;
   };
-};
+}
 
-exports.setBinaryTypeImpl = function (ws) {
+export function setBinaryTypeImpl(ws) {
   return function (bt) {
     return function () {
       ws.binaryType = bt;
     };
   };
-};
+}
 
-exports.sendImpl = function (ws) {
+export function sendImpl(ws) {
   return function (value) {
     return function () {
       ws.send(value);
     };
   };
-};
+}