diff --git a/asciinema/compose.yaml b/asciinema/compose.yaml
index b64a474..1b145f3 100644
--- a/asciinema/compose.yaml
+++ b/asciinema/compose.yaml
@@ -19,6 +19,7 @@ services:
       SMTP_USERNAME: ${EMAIL_SMTP_USER}
       SMTP_PASSWORD: ${EMAIL_SMTP_PASSWORD}
       SMTP_TLS: always
+      SMTP_TLS_VERIFY: false
       MAIL_FROM_ADDRESS: ${EMAIL_FROM}
       SIGN_UP_DISABLED: ${ASCIINEMA_SIGN_UP_DISABLED:-false}
       DEFAULT_AVATAR: gravatar