diff --git a/src/v0/destinations/klaviyo/data/KlaviyoIdentify.json b/src/v0/destinations/klaviyo/data/KlaviyoIdentify.json
index fd46b6cda9..cb49cbd2e1 100644
--- a/src/v0/destinations/klaviyo/data/KlaviyoIdentify.json
+++ b/src/v0/destinations/klaviyo/data/KlaviyoIdentify.json
@@ -1,10 +1,14 @@
 [
   {
     "destKey": "external_id",
-    "sourceKeys": "userId",
+    "sourceKeys": "userIdOnly",
     "required": false,
     "sourceFromGenericMap": true
   },
+  {
+    "destKey": "anonymous_id",
+    "sourceKeys": "anonymousId"
+  },
   {
     "destKey": "email",
     "sourceKeys": "emailOnly",
diff --git a/test/integrations/destinations/klaviyo/processor/identifyTestData.ts b/test/integrations/destinations/klaviyo/processor/identifyTestData.ts
index 0dd4751133..e03a5c30e8 100644
--- a/test/integrations/destinations/klaviyo/processor/identifyTestData.ts
+++ b/test/integrations/destinations/klaviyo/processor/identifyTestData.ts
@@ -50,6 +50,7 @@ const commonTraits = {
 const commonTraits2 = { ...commonTraits, street: '63, Shibuya' };
 
 const commonOutputUserProps = {
+  anonymous_id: '97c46c81-3140-456d-b2a9-690d70aaca35',
   external_id: 'user@1',
   email: 'test@rudderstack.com',
   first_name: 'Test',
diff --git a/test/integrations/destinations/klaviyo/router/data.ts b/test/integrations/destinations/klaviyo/router/data.ts
index 8866a8a546..43ae4a5152 100644
--- a/test/integrations/destinations/klaviyo/router/data.ts
+++ b/test/integrations/destinations/klaviyo/router/data.ts
@@ -253,6 +253,7 @@ export const data: RouterTestData[] = [
                         type: 'profile',
                         attributes: {
                           external_id: 'test',
+                          anonymous_id: '97c46c81-3140-456d-b2a9-690d70aaca35',
                           email: 'test@rudderstack.com',
                           first_name: 'Test',
                           last_name: 'Rudderlabs',
@@ -301,6 +302,7 @@ export const data: RouterTestData[] = [
                       type: 'profile',
                       attributes: {
                         external_id: 'test',
+                        anonymous_id: '97c46c81-3140-456d-b2a9-690d70aaca35',
                         email: 'test@rudderstack.com',
                         first_name: 'Test',
                         last_name: 'Rudderlabs',