diff --git a/backend/config/settings/aws.py b/backend/config/settings/aws.py
index 32157ec6..cbdfb906 100644
--- a/backend/config/settings/aws.py
+++ b/backend/config/settings/aws.py
@@ -7,10 +7,10 @@ CORS_ORIGIN_WHITELIST = ("http://127.0.0.1:3000", "http://0.0.0.0:3000", "http:/
 CSRF_TRUSTED_ORIGINS = CORS_ORIGIN_WHITELIST
 
 DJANGO_DRF_FILEPOND_STORAGES_BACKEND = "storages.backends.s3boto3.S3Boto3Storage"
-AWS_ACCESS_KEY_ID = os.environ.get("AWS_ACCESS_KEY_ID")
-AWS_SECRET_ACCESS_KEY = os.environ.get("AWS_SECRET_ACCESS_KEY")
-AWS_S3_REGION_NAME = os.environ.get("REGION_NAME", "us-west-1")
-AWS_STORAGE_BUCKET_NAME = os.environ.get("BUCKET_NAME", "filepond-uploads")
+AWS_ACCESS_KEY_ID = env("AWS_ACCESS_KEY_ID")
+AWS_SECRET_ACCESS_KEY = env("AWS_SECRET_ACCESS_KEY")
+AWS_S3_REGION_NAME = env("REGION_NAME", "us-west-1")
+AWS_STORAGE_BUCKET_NAME = env("BUCKET_NAME", "doccano")
 AWS_DEFAULT_ACL = "private"
 AWS_BUCKET_ACL = "private"
 AWS_AUTO_CREATE_BUCKET = True
diff --git a/backend/config/settings/gcp.py b/backend/config/settings/gcp.py
index 4a4b90d2..b6965366 100644
--- a/backend/config/settings/gcp.py
+++ b/backend/config/settings/gcp.py
@@ -9,6 +9,6 @@ CORS_ORIGIN_WHITELIST = ("http://127.0.0.1:3000", "http://0.0.0.0:3000", "http:/
 CSRF_TRUSTED_ORIGINS = CORS_ORIGIN_WHITELIST
 
 DJANGO_DRF_FILEPOND_STORAGES_BACKEND = "storages.backends.gcloud.GoogleCloudStorage"
-GS_BUCKET_NAME = os.environ.get("BUCKET_NAME", "doccano")
-GS_PROJECT_ID = os.environ["GS_PROJECT_ID"]
-GS_CREDENTIALS = service_account.Credentials.from_service_account_file(os.environ["GOOGLE_APPLICATION_CREDENTIALS"])
+GS_BUCKET_NAME = env("BUCKET_NAME", "doccano")
+GS_PROJECT_ID = env("GS_PROJECT_ID")
+GS_CREDENTIALS = service_account.Credentials.from_service_account_file(env("GOOGLE_APPLICATION_CREDENTIALS"))