diff --git a/README.md b/README.md
index aa187fc..446aef3 100644
--- a/README.md
+++ b/README.md
@@ -4,18 +4,21 @@ This plugin for serverless will improve create a file called `git_version.json`
 
 ```
 {
-    gitVersion: "STUFF"
+    gitVersion: "STUFF",
+    deployTime: "DEPLOY_TIME"
 }
 ```
 
 where `STUFF` is the output of `git describe --tags --dirty`.  That way you can `require()` the JSON file in your code to get the git version this deployment was from at runtime.
 
+`DEPLOY_TIME` is the output of Moment JS now() with a time zone that can be specified. 
 ## To use this plugin
 
  - `yarn add @hughescr/serverless-plugin-git-version-json --dev` or
   `npm install --save-dev @hughescr/serverless-plugin-git-version-json`
  - Add `serverless-plugin-git-version-json` to the `plugins` section of your `serverless.yml`
- - Add `versionJSONFile: git_version.json` to the `custom` section of your `serverless.yml`
+ - Add `versionJSONFile: git_version.json` to the `custom` section of your `serverless.yml`. Defaults to git_version.json if not specified.
+ - Add `deployTimeZone: {IANA_TIMEZONE_NAME}` to the `custom` section of your `serverless.yml`. A valid IANA time zone must be given. Otherwise, default to UTC. https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
 
 eg:
 
@@ -30,6 +33,7 @@ package:
 
 custom:
   versionJSONFile: git_version.json
+  deployTimeZone: America/Los_Angeles
 
 plugins:
   - serverless-plugin-git-version-json
diff --git a/index.js b/index.js
index c94c124..e654b2a 100644
--- a/index.js
+++ b/index.js
@@ -3,30 +3,45 @@
 const fs = require('fs');
 const path = require('path');
 const spawnSync = require('child_process').spawnSync;
+const moment = require('moment-timezone');
 
 class GitVersionOnDeploy {
+  get options() {
+    const options = Object.assign(
+      {
+        deployTimeZone: 'utc',
+        versionJSONFile: 'git_version.json'
+      }, this.serverless.service.custom ||
+      {}
+    );
+
+    const time_zone = moment.tz.zone(options.deployTimeZone);
+    if(time_zone === null) {
+      this.serverless.cli.log(
+        'WARNING: Bad time zone, falling back to UTC. You must use IANA timezone names.'
+      );
+      options.deployTimeZone = 'utc';
+    }
+
+    return options;
+  }
+
   constructor(serverless) {
     this.serverless = serverless;
     this.path = serverless.config.servicePath;
-    const custom = serverless.service.custom || {};
-    this.versionJSON = custom.versionJSONFile;
-    if(!this.versionJSON) {
-      this.serverless.cli.log('Path for git_version.json not specified.  Using "git_version.json".');
-      this.versionJSON = 'git_version.json';
-    }
-    this.filePath = path.join(this.path, this.versionJSON);
+    this.filePath = path.join(this.path, this.options.versionJSONFile);
 
     this.hooks = {
-      'offline:start:init':                      this.writeVersionFile.bind(this),
-      'before:deploy:function:deploy':           this.writeVersionFile.bind(this),
-      'after:deploy:function:deploy':            this.deleteVersionFile.bind(this),
+      'offline:start:init': this.writeVersionFile.bind(this),
+      'before:deploy:function:deploy': this.writeVersionFile.bind(this),
+      'after:deploy:function:deploy': this.deleteVersionFile.bind(this),
       'before:deploy:createDeploymentArtifacts': this.writeVersionFile.bind(this),
-      'after:deploy:createDeploymentArtifacts':  this.deleteVersionFile.bind(this),
+      'after:deploy:createDeploymentArtifacts': this.deleteVersionFile.bind(this),
     };
   }
 
   writeVersionFile() {
-    let versionFileContents = '{ "gitVersion": "';
+    let versionFileContents = '{ "gitVersion": "}';
     const gitResults = spawnSync('git', ['describe', '--tags', '--dirty'], { cwd: this.path, encoding: 'utf8' });
     if(gitResults.status != 0) {
       this.serverless.cli.log('Error while running "git describe --tags --dirty":');
@@ -34,15 +49,22 @@ class GitVersionOnDeploy {
       return;
     }
     const git_id = gitResults.stdout.trim();
-    versionFileContents = `{ "gitVersion": "${git_id}" }`;
+
+    this.serverless.cli.log(`Writing out to: ${this.options.versionJSONFile}`);
+    this.serverless.cli.log(`Using time zone: ${this.options.deployTimeZone}`);
+
+    const deploy_time = moment().tz(this.options.deployTimeZone).format('YYYY-MM-DDTHH:mm:ss.SSSZZ');
+
+    versionFileContents = `{ "gitVersion": "${git_id}", "deployTime": "${deploy_time}"}`;
 
     fs.writeFileSync(this.filePath, versionFileContents);
     this.serverless.cli.log(`Tagged with git version ${git_id}`);
+    this.serverless.cli.log(`Deploy time ${deploy_time}`);
   }
 
   deleteVersionFile() {
     fs.unlinkSync(this.filePath);
-    this.serverless.cli.log(`Deleted ${this.versionJSON}`);
+    this.serverless.cli.log(`Deleted ${this.options.versionJSONFile}`);
   }
 }
 
diff --git a/package.json b/package.json
index da3f307..04194d4 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hughescr/serverless-plugin-git-version-json",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "description": "A serverless plugin which will temporarily create a file git_version.json containing the output of `git describe --tags --dirty` and include it in the package",
   "main": "index.js",
   "repository": {
@@ -19,5 +19,8 @@
   "devDependencies": {
     "@hughescr/eslint-config-default": "^2.5.0",
     "eslint": "^7.6.0"
+  },
+  "dependencies": {
+    "moment-timezone": "^0.5.31"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index fa644e7..4b57410 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -538,6 +538,18 @@ mkdirp@^0.5.1:
   dependencies:
     minimist "^1.2.5"
 
+moment-timezone@^0.5.31:
+  version "0.5.31"
+  resolved "https://registry.yarnpkg.com/moment-timezone/-/moment-timezone-0.5.31.tgz#9c40d8c5026f0c7ab46eda3d63e49c155148de05"
+  integrity sha512-+GgHNg8xRhMXfEbv81iDtrVeTcWt0kWmTEY1XQK14dICTXnWJnT0dxdlPspwqF3keKMVPXwayEsk1DI0AA/jdA==
+  dependencies:
+    moment ">= 2.9.0"
+
+"moment@>= 2.9.0":
+  version "2.29.1"
+  resolved "https://registry.yarnpkg.com/moment/-/moment-2.29.1.tgz#b2be769fa31940be9eeea6469c075e35006fa3d3"
+  integrity sha512-kHmoybcPV8Sqy59DwNDY3Jefr64lK/by/da0ViFcuA4DH0vQg5Q6Ze5VimxkfQNSC+Mls/Kx53s7TjP1RhFEDQ==
+
 ms@^2.1.1:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"