diff --git a/src/components/layout/header.test.tsx b/src/components/layout/header.test.tsx
index ab4883b..646fd43 100644
--- a/src/components/layout/header.test.tsx
+++ b/src/components/layout/header.test.tsx
@@ -62,6 +62,8 @@ jest.mock('lucide-react', () => ({
   Menu: () => <span data-testid="menu-icon" />,
   X: () => <span data-testid="x-icon" />,
   MessageCircle: () => <span data-testid="message-circle-icon" />,
+  Sun: () => <span data-testid="sun-icon" />,
+  Moon: () => <span data-testid="moon-icon" />,
 }));
 
 jest.mock('@/components/ui/button', () => {