diff --git a/outline/docker-compose.yaml b/outline/docker-compose.yaml
index 439a595..6d34f89 100644
--- a/outline/docker-compose.yaml
+++ b/outline/docker-compose.yaml
@@ -69,6 +69,7 @@ services:
       - TEAM_LOGO=https://git.it-depot.ru/depot/docker-infrastructure/raw/commit/c25d86163f0911daa9b9109e753289087cd97b5e/depot_logo.png
       - SMTP_HOST=mail.loopa.site
       - SMTP_PORT=587
+      - SMTP_TLS_CIPHERS=TLSv1.3
       - SMTP_SECURE=false
       - SMTP_USERNAME=konskaya@za.loopa.site
       - SMTP_PASSWORD=${SMTP_PASSWORD}