diff --git a/app/services/email_service.py b/app/services/email_service.py
index ca58950..f6af59a 100644
--- a/app/services/email_service.py
+++ b/app/services/email_service.py
@@ -3,7 +3,7 @@ import time
 from email.mime.multipart import MIMEMultipart
 from email.mime.text import MIMEText
 from email.mime.image import MIMEImage
-from email.utils import formataddr
+from email.utils import formataddr, formatdate
 from pathlib import Path
 from flask import current_app, render_template
 
@@ -23,7 +23,7 @@ def _build_mime_message(to_address, subject, html_body, sender_name, attachments
     msg["Subject"] = subject
     msg["From"] = formataddr((sender_name, sender))
     msg["To"] = to_address
-    msg["Date"] = email.utils.formatdate(localtime=True)
+    msg["Date"] = formatdate(localtime=True)
     msg.attach(MIMEText(html_body, "html", "utf-8"))
 
     for att in attachments: