diff --git a/docker/deploy/docker-compose.yml b/docker/deploy/docker-compose.yml
index caa4eea7..63f4d0a8 100644
--- a/docker/deploy/docker-compose.yml
+++ b/docker/deploy/docker-compose.yml
@@ -18,6 +18,7 @@ services:
       CORS_ORIGIN: https://v1.vexplor.com
       CORS_CREDENTIALS: "true"
       LOG_LEVEL: info
+      ENCRYPTION_KEY: ilshin-plm-mail-encryption-key-32characters-2024-secure
     volumes:
       - /home/vexplor/backend_data:/app/uploads
     labels: