diff --git a/app/api/courrier/route.ts b/app/api/courrier/route.ts
index e175a5fe..802e8d56 100644
--- a/app/api/courrier/route.ts
+++ b/app/api/courrier/route.ts
@@ -3,7 +3,7 @@ import { ImapFlow } from 'imapflow';
 import { getServerSession } from 'next-auth';
 import { authOptions } from '@/app/api/auth/[...nextauth]/route';
 import { prisma } from '@/lib/prisma';
-import LRU from 'lru-cache';
+import { LRUCache } from 'lru-cache';
 
 // Define types
 interface Email {
@@ -22,7 +22,7 @@ interface Email {
 }
 
 // Configure efficient caching with TTL
-const emailCache = new LRU<string, Email>({
+const emailCache = new LRUCache<string, Email>({
   max: 500, // Store up to 500 emails
   ttl: 1000 * 60 * 5, // Cache for 5 minutes
 });