diff --git a/shimatta_kenkyusho/shimatta_kenkyusho/settings_production.py b/shimatta_kenkyusho/shimatta_kenkyusho/settings_production.py
index 901bdc1..2775540 100644
--- a/shimatta_kenkyusho/shimatta_kenkyusho/settings_production.py
+++ b/shimatta_kenkyusho/shimatta_kenkyusho/settings_production.py
@@ -16,9 +16,13 @@ The following environment variables have to be set:
 - DJANGO_MEDIA_URL
 - DJANGO_MEDIA_ROOT
 - DJANGO_POSTGRESQL_SOCKET
+- DJANGO_POSTGRESQL_PORT
 
 The following can be set
+- DJANGO_POSTGRESQL_PW (assumed empty if missing)
+- DJANGO_POSTGRESQL_USER (assmumed empty if mssing)
 - DJANGO_SECURE_HSTS_SECONDS (defaults to 120)
+- DJANGO_FORCE_DEV_MODE
 
 """
 
@@ -46,8 +50,11 @@ SECRET_KEY = get_env_value('DJANGO_SECRET_KEY')
 
 # SECURITY WARNING: don't run with debug turned on in production!
 DEBUG = False
+if get_env_value('DJANGO_FORCE_DEV_MODE', default=False) == 'True':
+    DEBUG = True
 
-ALLOWED_HOSTS = ['localhost', get_env_value('DJANGO_ALLOWED_HOST')]
+
+ALLOWED_HOSTS = ['127.0.0.1', 'localhost', get_env_value('DJANGO_ALLOWED_HOST')]
 
 
 # Application definition
@@ -232,4 +239,4 @@ CSRF_COOKIE_SECURE = True
 
 SECURE_SSL_REDIRECT = False
 
-SECURE_HSTS_SECONDS = get_env_value('DJANGO_SECURE_HSTS_SECONDS', default=120)
\ No newline at end of file
+SECURE_HSTS_SECONDS = get_env_value('DJANGO_SECURE_HSTS_SECONDS', default=120)