diff --git a/config.js b/config.js
index 3ceb0d0..c163ade 100644
--- a/config.js
+++ b/config.js
@@ -5,4 +5,4 @@ exports.proxy_request_timeout_ms = 10000; // The lenght of time we'll wait for a
 exports.max_request_length = 100000; // The maximum length of characters allowed for a request or a response.
 exports.enable_rate_limiting = true;
 exports.max_requests_per_second = 10; // The maximum number of requests per second to allow from a given IP.
-exports.blacklist_hostname_regex = /^(10\.|192\.|localhost$)/i; // Good for limiting access to internal IP addresses and hosts.
\ No newline at end of file
+exports.blacklist_hostname_regex = /^(10\.|192\.|127\.|localhost$)/i; // Good for limiting access to internal IP addresses and hosts.
\ No newline at end of file