diff --git a/backend/src/index.ts b/backend/src/index.ts
index 6c72ec3..3edbd51 100644
--- a/backend/src/index.ts
+++ b/backend/src/index.ts
@@ -65,7 +65,7 @@ async function runInitUsers(): Promise<void> {
     await db.query(
       `INSERT INTO users (name, email, password_hash)
        VALUES ($1, $2, $3)
-       ON CONFLICT (email) DO NOTHING`,
+       ON CONFLICT (email) DO UPDATE SET name = EXCLUDED.name`,
       [user.name, user.email, hash]
     );
     console.log(`  ✅ Utilisateur prêt : ${user.name} <${user.email}>`);
diff --git a/docker-compose.yml b/docker-compose.yml
index 4a71a78..4ddb42b 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -8,7 +8,7 @@ services:
       POSTGRES_USER:     notesfrais
       POSTGRES_PASSWORD: 9a3dabd70bb1e09f09962a95bdaffbeacdc56eeee029334b
     volumes:
-      - pgdata3:/var/lib/postgresql/data
+      - pgdata4:/var/lib/postgresql/data
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U notesfrais -d notesfrais"]
       interval: 5s
@@ -33,7 +33,7 @@ services:
       FRONTEND_URL:         https://frais.domench.fr
       GAEL_EMAIL:           waltergael@1dotech.com
       GAEL_PASSWORD:        Changeme123!
-      GREG_EMAIL:           greg@domench.fr
+      GREG_EMAIL:           waltergreg@1dotech.com
       GREG_PASSWORD:        Changeme123!
     volumes:
       - uploads:/app/uploads
@@ -78,5 +78,5 @@ networks:
     external: true
 
 volumes:
-  pgdata3:
+  pgdata4:
   uploads: