diff --git a/README.mdown b/README.mdown
index e14b5f82..bf933755 100644
--- a/README.mdown
+++ b/README.mdown
@@ -194,7 +194,7 @@ Formatters
 - _WildfireFormatter_: Used to format log records into the Wildfire/FirePHP protocol, only useful for the FirePHPHandler.
 - _ChromePHPFormatter_: Used to format log records into the ChromePHP format, only useful for the ChromePHPHandler.
 - _GelfMessageFormatter_: Used to format log records into Gelf message instances, only useful for the GelfHandler.
-- _LogstashFormatter_: Used to format log records into [logstash](http://logstash.net/) event json, useful for any handler listed under inputs [here](http://logstash.net/docs/1.1.5/).
+- _LogstashFormatter_: Used to format log records into [logstash](http://logstash.net/) event json, useful for any handler listed under inputs [here](http://logstash.net/docs/1.4.2/).
 - _ElasticaFormatter_: Used to format log records into an Elastica\Document object, only useful for the ElasticSearchHandler.
 - _LogglyFormatter_: Used to format log records into Loggly messages, only useful for the LogglyHandler.
 - _FlowdockFormatter_: Used to format log records into Flowdock messages, only useful for the FlowdockHandler.