diff --git a/README.md b/README.md
index 4fad4b1..a10b214 100644
--- a/README.md
+++ b/README.md
@@ -47,10 +47,6 @@ also be set to a strong, random password.
     * `TEST_HOST`
     * `TEST_PASSWORD`
     * `TEST_PORT`
-* To override the version being sent to `repertory`, set the following variable:
-    * `REPERTORY_JS_FORCE_VERSION`
-        * NOTE: This variable is primarily used for debugging/testing purposes and should normally
-          NOT be set.
 
 ## Example API Usage
 
diff --git a/src/__tests__/constants.test.js b/src/__tests__/constants.test.js
index 058a7fa..b320861 100644
--- a/src/__tests__/constants.test.js
+++ b/src/__tests__/constants.test.js
@@ -14,13 +14,5 @@ test(`'instance_id' is valid`, () => {
 
 test(`'version' can be read from 'package.json'`, () => {
   console.log(get_version());
-  expect(get_version()).toBe('1.3.1-r4');
-});
-
-test(`'version' can be overridden by environment variable`, () => {
-  console.log(process.env);
-  process.env.REPERTORY_JS_FORCE_VERSION = '1.3.0';
-  console.log(get_version());
-  expect(get_version()).toBe('1.3.0');
-  console.log(process.env);
+  expect(get_version()).toBe('1.4.0-r1');
 });
diff --git a/src/networking/packet.js b/src/networking/packet.js
index c294450..de26c85 100644
--- a/src/networking/packet.js
+++ b/src/networking/packet.js
@@ -17,15 +17,13 @@ import {
   ui8_array_to_ui8,
   ui8_to_ui8_array,
 } from '../utils/byte_order';
-import {XChaCha20Poly1305} from '@stablelib/xchacha20poly1305';
+import { XChaCha20Poly1305 } from '@stablelib/xchacha20poly1305';
 
 export default class packet {
   constructor(token) {
     this.token = token;
   }
 
-  static HEADER = new TextEncoder().encode(this.HEADER_STRING);
-
   buffer = null;
   decode_offset = 0;
   token;
@@ -163,7 +161,7 @@ export default class packet {
 
       const key = Uint8Array.from(hash.digest());
       const nonce = this.buffer.slice(0, 24);
-      const mac = this.buffer.slice(24, 16);
+      const mac = this.buffer.slice(24, 16 + 24);
 
       const customEncryption = getCustomEncryption();
       if (customEncryption) {
@@ -177,9 +175,13 @@ export default class packet {
           'base64'
         );
       } else {
-        const aad = ui32_to_be_ui8_array(this.buffer.length); 
+        const aad = ui32_to_be_ui8_array(this.buffer.length);
+        this.buffer = new Uint8Array([
+          ...this.buffer.slice(nonce.length + mac.length),
+          ...this.buffer.slice(nonce.length, nonce.length + mac.length),
+        ]);
         this.buffer = Buffer.from(
-          new XChaCha20Poly1305(key).open(nonce, this.buffer.slice(24), aad),
+          new XChaCha20Poly1305(key).open(nonce, this.buffer, aad)
         );
       }
 
@@ -299,8 +301,12 @@ export default class packet {
           )
         );
       } else {
-        const aad = ui32_to_be_ui8_array(this.buffer.length + 40)
+        const aad = ui32_to_be_ui8_array(this.buffer.length + 40);
         this.buffer = new XChaCha20Poly1305(key).seal(nonce, this.buffer, aad);
+        this.buffer = new Uint8Array([
+          ...this.buffer.slice(this.buffer.length - 16),
+          ...this.buffer.slice(0, this.buffer.length - 16),
+        ]);
         this.push_buffer(nonce);
       }
 
diff --git a/src/utils/constants.js b/src/utils/constants.js
index 8612c15..6590a8a 100644
--- a/src/utils/constants.js
+++ b/src/utils/constants.js
@@ -13,5 +13,4 @@ export const setCustomEncryption = (ce) => {
 
 export const instance_id = uuidv4();
 export const package_json = _package_json;
-export const get_version = () =>
-  process.env.REPERTORY_JS_FORCE_VERSION || _package_json.version;
+export const get_version = () => _package_json.version;