diff --git a/src/account.test.ts b/src/account.test.ts
index 1b4b2c1..e1d835e 100644
--- a/src/account.test.ts
+++ b/src/account.test.ts
@@ -8,6 +8,11 @@ import { AWSConfig } from './config';
 import { mockClient } from 'aws-sdk-client-mock';
 import AWSMock from 'aws-sdk-mock';
 
+jest.mock('./logger', () => ({
+  ...jest.requireActual('./logger'),
+  showSpinner: jest.fn(),
+}));
+
 describe('getAccountAlias', () => {
   const organizationsMock = mockClient(OrganizationsClient);
 
diff --git a/src/cost.test.ts b/src/cost.test.ts
index dc6f24f..d1262c1 100644
--- a/src/cost.test.ts
+++ b/src/cost.test.ts
@@ -11,6 +11,11 @@ const costDataLength = 65;
 const fixedToday = '2024-05-11'; // cost of 'this month' will be sum of 10 days from May 1 to May 10 ('today' is omitted because its cost is incomplete)
 const fixedFirstDay = dayjs(fixedToday).subtract(costDataLength, 'day');
 
+jest.mock('./logger', () => ({
+  ...jest.requireActual('./logger'),
+  showSpinner: jest.fn(),
+}));
+
 describe('Cost Functions', () => {
   beforeAll(() => {
     AWSMock.setSDKInstance(AWS);
diff --git a/src/printers/slack.test.ts b/src/printers/slack.test.ts
index 2ad7878..6ae52c8 100644
--- a/src/printers/slack.test.ts
+++ b/src/printers/slack.test.ts
@@ -17,6 +17,11 @@ const awsConfig: AWSConfig = {
   region: 'us-east-1',
 };
 
+jest.mock('../logger', () => ({
+  ...jest.requireActual('../logger'),
+  showSpinner: jest.fn(),
+}));
+
 const mockedCostByService = generateMockedCostByService(
   fixedToday,
   costDataLength,