diff --git a/src/lib/contentstack.ts b/src/lib/contentstack.ts
index d69b57c..43f5497 100644
--- a/src/lib/contentstack.ts
+++ b/src/lib/contentstack.ts
@@ -6,6 +6,8 @@ import { Policy, StackConfig } from './types';
 import { getHost } from './utils';
 export * as Utils from '@contentstack/utils';
 
+let version = '{{VERSION}}';
+
 /**
  * @method stack
  * @memberof Contentstack
@@ -71,6 +73,8 @@ export function stack(config: StackConfig): StackClass {
     defaultConfig.headers['x-header-ea'] = config.early_access.join(',');
   }
 
+  defaultConfig.headers['X-User-Agent'] = 'contentstack-delivery-typescript-{{PLATFORM}}/' + version;
+
   // return new Stack(httpClient(defaultConfig), config);
   const client = httpClient(defaultConfig as any);