diff --git a/index.js b/index.js
index 89c38137..0ad1fabe 100644
--- a/index.js
+++ b/index.js
@@ -25,14 +25,19 @@ app.use(
   cors({
     origin: function (origin, callback) {
       const allowedOrigins = [
+        // Localhost
         "http://localhost:3000",
         "http://localhost:3001",
         "http://localhost:3002",
         "http://localhost:3003",
         "http://localhost:3004",
         "http://localhost:3005",
+        // Production
         "https://dsp5-archi-o24a-15m-g3.fr",
-        "https://dev.dsp5-archi-o24a-15m-g3.fr"
+        // Dev
+        "https://dev.dsp5-archi-o24a-15m-g3.fr",
+        // Preprod
+        "https://preprod.dsp5-archi-o24a-15m-g3.fr"
       ];
       // Autoriser les requêtes sans origin (Postman, curl, etc.)
       if (!origin) return callback(null, true);