diff --git a/README.md b/README.md
index 42dd255..9e05b0b 100644
--- a/README.md
+++ b/README.md
@@ -55,7 +55,7 @@ also be set to a strong, random password.
 ## Example API Usage
 
 ```javascript
-const rep = require('@blockstorage/repertory-js');
+import * as rep from 'repertory-js';
 
 
 // Repertory host settings
diff --git a/package.json b/package.json
index 2332283..9bba623 100644
--- a/package.json
+++ b/package.json
@@ -23,6 +23,7 @@
     "altcoin",
     "cryptocurrency"
   ],
+  "main": "dist/mjs/repertory-js.mjs",
   "module": "dist/mjs/repertory-js.mjs",
   "files": [
     "dist/mjs"
@@ -34,7 +35,6 @@
   },
   "dependencies": {
     "int64-buffer": "^1.0.0",
-    "js-sha256": "^0.9.0",
     "socket-pool": "^1.2.3",
     "text-encoding": "^0.7.0",
     "uuid": "^8.3.2"
diff --git a/src/__tests__/connection.test.js b/src/__tests__/connection.test.js
index 9bcc75e..4bf723a 100644
--- a/src/__tests__/connection.test.js
+++ b/src/__tests__/connection.test.js
@@ -1,7 +1,6 @@
 import connection from '../networking/connection';
 import packet from '../networking/packet';
-
-const Socket = require('net');
+import Socket from 'net';
 
 test(`connect fails when error occurs during createConnection`, async () => {
   const mock_create = (port, host, cb) => {
diff --git a/src/__tests__/constants.test.js b/src/__tests__/constants.test.js
index fcf0651..18f6439 100644
--- a/src/__tests__/constants.test.js
+++ b/src/__tests__/constants.test.js
@@ -1,6 +1,5 @@
-import { get_version, instance_id, package_json } from '../utils/constants';
-
-const uuid = require('uuid');
+import {get_version, instance_id, package_json} from '../utils/constants';
+import * as uuid from 'uuid';
 
 test(`can read 'package.json'`, () => {
   console.log(package_json);
diff --git a/src/networking/packet.js b/src/networking/packet.js
index 7cc527b..017e165 100644
--- a/src/networking/packet.js
+++ b/src/networking/packet.js
@@ -1,7 +1,7 @@
 import { randomBytes } from 'crypto';
-import { Int64BE, Uint64BE } from 'int64-buffer';
-import { sha256 } from 'js-sha256';
-import { TextEncoder } from 'text-encoding';
+import {Int64BE, Uint64BE} from 'int64-buffer';
+import crypto from 'crypto';
+import {TextEncoder} from 'text-encoding';
 
 import {
   be_ui8_array_to_i16,
@@ -158,10 +158,10 @@ export default class packet {
 
   decrypt = async () => {
     try {
-      const hash = sha256.create();
-      hash.update(new TextEncoder().encode(this.token));
+      let hash = crypto.createHash('sha256');
+      hash = hash.update(new TextEncoder().encode(this.token));
 
-      const key = Uint8Array.from(hash.array());
+      const key = Uint8Array.from(hash.digest());
       const nonce = this.buffer.slice(0, 12);
 
       this.buffer = new JSChaCha20(key, nonce, 0).decrypt(
@@ -270,10 +270,10 @@ export default class packet {
   encrypt = async (nonce) => {
     try {
       this.push_buffer(packet.HEADER);
-      const hash = sha256.create();
-      hash.update(new TextEncoder().encode(this.token));
+      let hash = crypto.createHash('sha256');
+      hash = hash.update(new TextEncoder().encode(this.token));
 
-      const key = Uint8Array.from(hash.array());
+      const key = Uint8Array.from(hash.digest());
       if (!nonce) {
         nonce = Uint8Array.from(randomBytes(12));
       }
diff --git a/src/utils/constants.js b/src/utils/constants.js
index 2d5d868..4b6aee9 100644
--- a/src/utils/constants.js
+++ b/src/utils/constants.js
@@ -1,4 +1,4 @@
-const { v4: uuidv4 } = require('uuid');
+import {v4 as uuidv4} from 'uuid';
 import _package_json from '../../package.json';
 
 export const instance_id = uuidv4();