diff --git a/logstash.gemspec b/logstash.gemspec
index 398f1d129..5b1458754 100644
--- a/logstash.gemspec
+++ b/logstash.gemspec
@@ -49,7 +49,7 @@ Gem::Specification.new do |gem|
   gem.add_runtime_dependency "statsd-ruby", ["1.2.0"]           #(MIT license)
   gem.add_runtime_dependency "xml-simple"                       #(ruby license?)
   gem.add_runtime_dependency "xmpp4r", ["0.5"]                  #(ruby license)
-  gem.add_runtime_dependency "jls-lumberjack", [">=0.0.19"]     #(Apache 2.0 license)
+  gem.add_runtime_dependency "jls-lumberjack", [">=0.0.20"]     #(Apache 2.0 license)
   gem.add_runtime_dependency "geoip", [">= 1.3.2"]              #(GPL license)
   gem.add_runtime_dependency "beefcake", "0.3.7"                #(MIT license)
   gem.add_runtime_dependency "murmurhash3"                      #(MIT license)