diff --git a/configuration/configuration.py b/configuration/configuration.py
index 9691592..577c3f4 100644
--- a/configuration/configuration.py
+++ b/configuration/configuration.py
@@ -348,3 +348,5 @@ SESSION_FILE_PATH = environ.get('SESSION_FILE_PATH', environ.get('SESSIONS_ROOT'
 # Time zone (default: UTC)
 TIME_ZONE = environ.get('TIME_ZONE', 'UTC')
 
+# If true disables miscellaneous functionality which depends on access to the Internet.
+ISOLATED_DEPLOYMENT = _environ_get_and_map('ISOLATED_DEPLOYMENT', 'False', _AS_BOOL)