diff --git a/lab-1/lab1/settings.py b/lab-1/lab1/settings.py
index a6e5ff1..d338113 100644
--- a/lab-1/lab1/settings.py
+++ b/lab-1/lab1/settings.py
@@ -10,6 +10,7 @@ For the full list of settings and their values, see
 https://docs.djangoproject.com/en/6.0/ref/settings/
 """
 
+import os
 from pathlib import Path
 
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
@@ -20,12 +21,13 @@ BASE_DIR = Path(__file__).resolve().parent.parent
 # See https://docs.djangoproject.com/en/6.0/howto/deployment/checklist/
 
 # SECURITY WARNING: keep the secret key used in production secret!
-SECRET_KEY = 'django-insecure--xqwhdo2$)n*y3yk=d*vmwx6nuwt8h=m5@_og_uzj+11^hu7))'
+# Ключ по умолчанию — только для локального запуска лабораторной; на сервере задаётся DJANGO_SECRET_KEY
+SECRET_KEY = os.environ.get("DJANGO_SECRET_KEY", "django-insecure-lab-dev-key-change-me")
 
 # SECURITY WARNING: don't run with debug turned on in production!
-DEBUG = True
+DEBUG = os.environ.get("DJANGO_DEBUG", "True") == "True"
 
-ALLOWED_HOSTS = ['*']
+ALLOWED_HOSTS = os.environ.get("DJANGO_ALLOWED_HOSTS", "*").split(",")
 
 
 # Application definition
@@ -75,8 +77,6 @@ WSGI_APPLICATION = 'lab1.wsgi.application'
 # Database
 # https://docs.djangoproject.com/en/6.0/ref/settings/#databases
 
-import os
-
 DATABASES = {
     'default': {
         'ENGINE': 'django.db.backends.postgresql',
diff --git a/lab-2/caddy/backend/lab1/settings.py b/lab-2/caddy/backend/lab1/settings.py
index 397c0f2..f9a1f80 100644
--- a/lab-2/caddy/backend/lab1/settings.py
+++ b/lab-2/caddy/backend/lab1/settings.py
@@ -10,6 +10,7 @@ For the full list of settings and their values, see
 https://docs.djangoproject.com/en/6.0/ref/settings/
 """
 
+import os
 from pathlib import Path
 
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
@@ -20,12 +21,13 @@ BASE_DIR = Path(__file__).resolve().parent.parent
 # See https://docs.djangoproject.com/en/6.0/howto/deployment/checklist/
 
 # SECURITY WARNING: keep the secret key used in production secret!
-SECRET_KEY = 'django-insecure--xqwhdo2$)n*y3yk=d*vmwx6nuwt8h=m5@_og_uzj+11^hu7))'
+# Ключ по умолчанию — только для локального запуска лабораторной; на сервере задаётся DJANGO_SECRET_KEY
+SECRET_KEY = os.environ.get("DJANGO_SECRET_KEY", "django-insecure-lab-dev-key-change-me")
 
 # SECURITY WARNING: don't run with debug turned on in production!
-DEBUG = True
+DEBUG = os.environ.get("DJANGO_DEBUG", "True") == "True"
 
-ALLOWED_HOSTS = ['*']
+ALLOWED_HOSTS = os.environ.get("DJANGO_ALLOWED_HOSTS", "*").split(",")
 CSRF_TRUSTED_ORIGINS = ['http://localhost', 'https://localhost']
 
 
@@ -76,8 +78,6 @@ WSGI_APPLICATION = 'lab1.wsgi.application'
 # Database
 # https://docs.djangoproject.com/en/6.0/ref/settings/#databases
 
-import os
-
 DATABASES = {
     'default': {
         'ENGINE': 'django.db.backends.postgresql',
diff --git a/lab-2/local/backend/lab1/settings.py b/lab-2/local/backend/lab1/settings.py
index 91da8aa..1cd3a06 100644
--- a/lab-2/local/backend/lab1/settings.py
+++ b/lab-2/local/backend/lab1/settings.py
@@ -10,6 +10,7 @@ For the full list of settings and their values, see
 https://docs.djangoproject.com/en/6.0/ref/settings/
 """
 
+import os
 from pathlib import Path
 
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
@@ -20,12 +21,13 @@ BASE_DIR = Path(__file__).resolve().parent.parent
 # See https://docs.djangoproject.com/en/6.0/howto/deployment/checklist/
 
 # SECURITY WARNING: keep the secret key used in production secret!
-SECRET_KEY = 'django-insecure--xqwhdo2$)n*y3yk=d*vmwx6nuwt8h=m5@_og_uzj+11^hu7))'
+# Ключ по умолчанию — только для локального запуска лабораторной; на сервере задаётся DJANGO_SECRET_KEY
+SECRET_KEY = os.environ.get("DJANGO_SECRET_KEY", "django-insecure-lab-dev-key-change-me")
 
 # SECURITY WARNING: don't run with debug turned on in production!
-DEBUG = True
+DEBUG = os.environ.get("DJANGO_DEBUG", "True") == "True"
 
-ALLOWED_HOSTS = ['*']
+ALLOWED_HOSTS = os.environ.get("DJANGO_ALLOWED_HOSTS", "*").split(",")
 CSRF_TRUSTED_ORIGINS = ['http://localhost']
 
 
@@ -76,8 +78,6 @@ WSGI_APPLICATION = 'lab1.wsgi.application'
 # Database
 # https://docs.djangoproject.com/en/6.0/ref/settings/#databases
 
-import os
-
 DATABASES = {
     'default': {
         'ENGINE': 'django.db.backends.postgresql',