diff --git a/packages/destination-actions/src/destinations/loops/__tests__/__snapshots__/snapshot.test.ts.snap b/packages/destination-actions/src/destinations/loops/__tests__/__snapshots__/snapshot.test.ts.snap
index c5ee0d332d..8a7236bcc7 100644
--- a/packages/destination-actions/src/destinations/loops/__tests__/__snapshots__/snapshot.test.ts.snap
+++ b/packages/destination-actions/src/destinations/loops/__tests__/__snapshots__/snapshot.test.ts.snap
@@ -7,7 +7,7 @@ Object {
   "firstName": "3dQ7ER]1HKW",
   "lastName": "3dQ7ER]1HKW",
   "mailingLists": Object {
-    "testType": "3dQ7ER]1HKW",
+    "3dQ7ER]1HKW": true,
   },
   "source": "3dQ7ER]1HKW",
   "subscribed": true,
@@ -19,6 +19,7 @@ Object {
 
 exports[`Testing snapshot for actions-loops destination: createOrUpdateContact action - required fields 1`] = `
 Object {
+  "mailingLists": Object {},
   "userId": "3dQ7ER]1HKW",
 }
 `;
diff --git a/packages/destination-actions/src/destinations/loops/createOrUpdateContact/__tests__/__snapshots__/snapshot.test.ts.snap b/packages/destination-actions/src/destinations/loops/createOrUpdateContact/__tests__/__snapshots__/snapshot.test.ts.snap
index 31a9c48d31..cf78988883 100644
--- a/packages/destination-actions/src/destinations/loops/createOrUpdateContact/__tests__/__snapshots__/snapshot.test.ts.snap
+++ b/packages/destination-actions/src/destinations/loops/createOrUpdateContact/__tests__/__snapshots__/snapshot.test.ts.snap
@@ -7,7 +7,7 @@ Object {
   "firstName": "IAIhDY9yOUxjQs(FSFfe",
   "lastName": "IAIhDY9yOUxjQs(FSFfe",
   "mailingLists": Object {
-    "testType": "IAIhDY9yOUxjQs(FSFfe",
+    "IAIhDY9yOUxjQs(FSFfe": false,
   },
   "source": "IAIhDY9yOUxjQs(FSFfe",
   "subscribed": false,
@@ -19,6 +19,7 @@ Object {
 
 exports[`Testing snapshot for Loops's createOrUpdateContact destination action: required fields 1`] = `
 Object {
+  "mailingLists": Object {},
   "userId": "IAIhDY9yOUxjQs(FSFfe",
 }
 `;
diff --git a/packages/destination-actions/src/destinations/loops/createOrUpdateContact/__tests__/index.test.ts b/packages/destination-actions/src/destinations/loops/createOrUpdateContact/__tests__/index.test.ts
index 0a69d9412b..caa0756f6b 100644
--- a/packages/destination-actions/src/destinations/loops/createOrUpdateContact/__tests__/index.test.ts
+++ b/packages/destination-actions/src/destinations/loops/createOrUpdateContact/__tests__/index.test.ts
@@ -44,7 +44,8 @@ describe('Loops.createOrUpdateContact', () => {
       source: 'Segment',
       subscribed: true,
       userGroup: 'Alum',
-      userId: 'some-id-1'
+      userId: 'some-id-1',
+      mailingLists: {}
     }
     nock('https://app.loops.so/api/v1').put('/contacts/update', testPayloadOut).reply(200, {
       success: true,
@@ -65,34 +66,44 @@ describe('Loops.createOrUpdateContact', () => {
   })
 
   it('should not work without email', async () => {
-    const testPayload = {
+    const testPayloadIn = {
       firstName: 'Ellen',
       userId: 'some-id-1'
     }
-    nock('https://app.loops.so/api/v1').put('/contacts/update', testPayload).reply(400, {
+    const testPayloadOut = {
+      firstName: 'Ellen',
+      userId: 'some-id-1',
+      mailingLists: {}
+    }
+    nock('https://app.loops.so/api/v1').put('/contacts/update', testPayloadOut).reply(400, {
       success: false,
       message: 'userId not found and cannot create a new contact without an email.'
     })
     await expect(
       testDestination.testAction('createOrUpdateContact', {
-        mapping: testPayload,
+        mapping: testPayloadIn,
         settings: { apiKey: LOOPS_API_KEY }
       })
     ).rejects.toThrow('Bad Request')
   })
 
   it('should work without optional fields', async () => {
-    const testPayload = {
+    const testPayloadIn = {
       email: 'test@example.com',
       userId: 'some-id-2'
     }
-    nock('https://app.loops.so/api/v1').put('/contacts/update', testPayload).reply(200, {
+    const testPayloadOut = {
+      email: 'test@example.com',
+      userId: 'some-id-2',
+      mailingLists: {}
+    }
+    nock('https://app.loops.so/api/v1').put('/contacts/update', testPayloadOut).reply(200, {
       success: true,
       id: 'someId'
     })
 
     const responses = await testDestination.testAction('createOrUpdateContact', {
-      mapping: testPayload,
+      mapping: testPayloadIn,
       settings: { apiKey: LOOPS_API_KEY }
     })