logstash-output-stdout.gemspec in logstash-output-stdout-1.1.0 vs logstash-output-stdout.gemspec in logstash-output-stdout-2.0.0

@@ -1,9 +1,9 @@
 Gem::Specification.new do |s|
 
   s.name            = 'logstash-output-stdout'
-  s.version         = '1.1.0'
+  s.version         = '2.0.0'
   s.licenses        = ['Apache License (2.0)']
   s.summary         = "A simple output which prints to the STDOUT of the shell running Logstash."
   s.description     = "This gem is a logstash plugin required to be installed on top of the Logstash core pipeline using $LS_HOME/bin/plugin install gemname. This gem is not a stand-alone program"
   s.authors         = ["Elastic"]
   s.email           = '[e-mail]'
@@ -18,10 +18,10 @@
 
   # Special flag to let us know this is actually a logstash plugin
   s.metadata = { "logstash_plugin" => "true", "logstash_group" => "output" }
 
   # Gem dependencies
-  s.add_runtime_dependency 'logstash-core', '>= 1.4.0', '< 2.0.0'
+  s.add_runtime_dependency "logstash-core", "~> 2.0.0.snapshot"
   s.add_runtime_dependency 'logstash-codec-line'
 
   s.add_development_dependency 'logstash-devutils'
 end