diff --git a/backend/src/index.ts b/backend/src/index.ts
index ce3b784..83e121b 100644
--- a/backend/src/index.ts
+++ b/backend/src/index.ts
@@ -564,6 +564,19 @@ app.get('/api/v1/journal/:date', async (c) => {
   return c.json({ data: journal, error: null });
 });
 
+app.delete('/api/v1/journal/:date', async (c) => {
+  const userId = await getUserId(c);
+  if (!userId) return c.json({ data: null, error: { code: 'UNAUTHORIZED', message: 'Invalid API key' } }, 401);
+  
+  const { date } = c.req.param();
+  
+  await prisma.journal.deleteMany({
+    where: { userId, date },
+  });
+  
+  return c.json({ data: { deleted: true }, error: null });
+});
+
 app.get('/api/v1/journals', async (c) => {
   const userId = await getUserId(c);
   if (!userId) return c.json({ data: null, error: { code: 'UNAUTHORIZED', message: 'Invalid API key' } }, 401);