diff --git a/tests/List.test.jsx b/tests/List.test.jsx
index 23c33a7..07b54c5 100644
--- a/tests/List.test.jsx
+++ b/tests/List.test.jsx
@@ -5,6 +5,7 @@ import { useStateWithStorage } from '../src/utils';
 
 vi.mock('../src/utils', () => ({
 	useStateWithStorage: vi.fn(),
+	ONE_DAY_IN_MILLISECONDS: 86400000,
 }));
 
 beforeEach(() => {
diff --git a/tests/setup.js b/tests/setup.js
index 2f80441..78016cb 100644
--- a/tests/setup.js
+++ b/tests/setup.js
@@ -3,3 +3,8 @@
 // expect(element).toHaveTextContent(/react/i)
 // learn more: https://github.com/testing-library/jest-dom
 import '@testing-library/jest-dom/vitest';
+import { vi } from 'vitest';
+
+vi.mock('@the-collab-lab/shopping-list-utils', () => ({
+	calculateEstimate: vi.fn(),
+}));