diff --git a/package-lock.json b/package-lock.json
index a26ac1a..827ff1c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22,6 +22,7 @@
         "pngjs": "^6.0.0",
         "react": "^17.0.2",
         "react-dom": "^17.0.2",
+        "uuid": "^8.3.2",
         "webpack": "^5.0.0",
         "worker-loader": "^3.0.7"
       },
@@ -4213,6 +4214,14 @@
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
       "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
     },
+    "node_modules/uuid": {
+      "version": "8.3.2",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-8.3.2.tgz",
+      "integrity": "sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==",
+      "bin": {
+        "uuid": "dist/bin/uuid"
+      }
+    },
     "node_modules/vm-browserify": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/vm-browserify/-/vm-browserify-1.1.2.tgz",
@@ -7725,6 +7734,11 @@
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
       "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
     },
+    "uuid": {
+      "version": "8.3.2",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-8.3.2.tgz",
+      "integrity": "sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg=="
+    },
     "vm-browserify": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/vm-browserify/-/vm-browserify-1.1.2.tgz",
diff --git a/package.json b/package.json
index 3c3281f..ec58c5a 100644
--- a/package.json
+++ b/package.json
@@ -24,6 +24,7 @@
     "pngjs": "^6.0.0",
     "react": "^17.0.2",
     "react-dom": "^17.0.2",
+    "uuid": "^8.3.2",
     "webpack": "^5.0.0",
     "worker-loader": "^3.0.7"
   },
diff --git a/src/pass.ts b/src/pass.ts
index 2685c39..5dc5847 100644
--- a/src/pass.ts
+++ b/src/pass.ts
@@ -2,6 +2,7 @@ import {Constants} from "./constants";
 import {Payload, PayloadBody} from "./payload";
 import {ValueSets} from "./value_sets";
 import {toBuffer as createZip} from 'do-not-zip';
+import {v4 as uuid4} from 'uuid';
 
 const crypto = require('crypto')
 
@@ -26,7 +27,7 @@ interface Field {
     textAlignment?: string;
 }
 
-interface GenericFields {
+interface PassStructureDictionary {
     headerFields: Array<Field>;
     primaryFields: Array<Field>;
     secondaryFields: Array<Field>;
@@ -54,7 +55,7 @@ export class PassData {
     serialNumber: string;
     barcodes: Array<QrCode>;
     barcode: QrCode;
-    generic: GenericFields;
+    generic: PassStructureDictionary;
 
     // Generates a sha1 hash from a given buffer
     private static getBufferHash(buffer: Buffer | string): string {
@@ -152,7 +153,7 @@ export class PassData {
         this.labelColor = payload.labelColor;
         this.foregroundColor = payload.foregroundColor;
         this.backgroundColor = payload.backgroundColor;
-        this.serialNumber = payload.uvci;
+        this.serialNumber = uuid4(); // Generate random UUID v4
         this.barcodes = [qrCode];
         this.barcode = qrCode;
         this.generic = {