diff --git a/logstash.gemspec b/logstash.gemspec
index 2aa3ed5b7..c09477634 100644
--- a/logstash.gemspec
+++ b/logstash.gemspec
@@ -37,13 +37,17 @@ Gem::Specification.new do |gem|
 
   # Plugin manager dependencies
 
-  # jar-dependencies 0.1.2 is included in jruby 1.7.6 no need to include here and
-  # this avoids the gemspec jar path parsing issue of jar-dependencies 0.1.2
+  # Currently there is a blocking issue with the latest (3.1.1.0.9) version of 
+  # `ruby-maven` # and installing jars dependencies. If you are declaring a gem 
+  # in a gemfile # using the :github option it will make the bundle install crash,
+  # before upgrading this gem you need to test the version with any plugins
+  # that require jars.
   #
-  gem.add_runtime_dependency "jar-dependencies", ["= 0.1.7"]   #(MIT license)
-
-  gem.add_runtime_dependency "ruby-maven"                       #(EPL license)
-  gem.add_runtime_dependency "maven-tools"
+  # Ticket: https://github.com/elasticsearch/logstash/issues/2595 
+  gem.add_runtime_dependency "jar-dependencies", '0.1.7'   #(MIT license)
+  gem.add_runtime_dependency "ruby-maven", '3.1.1.0.8'                       #(EPL license)
+  gem.add_runtime_dependency "maven-tools", '1.0.7'
+  
   gem.add_runtime_dependency "minitar"
   gem.add_runtime_dependency "file-dependencies"
 
diff --git a/tools/Gemfile.jruby-1.9.lock b/tools/Gemfile.jruby-1.9.lock
index f070b6e33..51df23a7f 100644
--- a/tools/Gemfile.jruby-1.9.lock
+++ b/tools/Gemfile.jruby-1.9.lock
@@ -1,5 +1,5 @@
 PATH
-  remote: /Users/jls/projects/logstash
+  remote: /Users/ph/es/logstash
   specs:
     logstash (2.0.0.dev-java)
       cabin (>= 0.7.0)
@@ -13,13 +13,13 @@ PATH
       jrjackson
       jruby-httpclient
       logstash-devutils
-      maven-tools
+      maven-tools (= 1.0.7)
       mime-types
       minitar
       pry
       rack
       rspec (~> 2.14.0)
-      ruby-maven
+      ruby-maven (= 3.1.1.0.8)
       sinatra
       stud
       treetop (~> 1.4.0)
@@ -27,7 +27,7 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.3.6)
+    addressable (2.3.7)
     axiom-types (0.1.1)
       descendants_tracker (~> 0.0.4)
       ice_nine (~> 0.11.0)
@@ -102,7 +102,7 @@ GEM
     slop (3.6.0)
     spoon (0.0.4)
       ffi
-    stud (0.0.18)
+    stud (0.0.19)
     thread_safe (0.3.4-java)
     tilt (1.4.1)
     treetop (1.4.15)