diff --git a/main.py b/main.py
index 2909975..72aa371 100644
--- a/main.py
+++ b/main.py
@@ -24,7 +24,8 @@ CONFIGS = {
     # "ENV": "development",
     # "DEBUG": True,
     "SECRET_KEY": os.urandom(30), # Set the secret key for session authentication
-    "PERMANENT_SESSION_LIFETIME": timedelta(minutes=60)
+    "PERMANENT_SESSION_LIFETIME": timedelta(minutes=60),
+    "PREFERRED_URL_SCHEME" : 'https'
 }
 SQL_CONFIG = dict(
     database= os.getenv("PGDATABASE"),
diff --git a/templates/base.html b/templates/base.html
index 9603407..fca5ebc 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -5,7 +5,7 @@
         <meta http-equiv="X-UA-Compatible" content="IE=edge" />
         <meta name="viewport" content="width=device-width, initial-scale=1.0" />
         <title>{% block title %}NTHU Trading Platform{% endblock title%}</title>
-        <link rel="icon" type="image/x-icon" href="{{ url_for('static', filename='/img/growth.ico') }}">
+        <link rel="icon" type="image/x-icon" href="{{ url_for('static', filename='/img/growth.ico', _schema='https') }}">
         <link
             href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/css/bootstrap.min.css"
             rel="stylesheet"