diff --git a/elasticsearch-model/elasticsearch-model.gemspec b/elasticsearch-model/elasticsearch-model.gemspec
index 9e52c400a..ca57aab75 100644
--- a/elasticsearch-model/elasticsearch-model.gemspec
+++ b/elasticsearch-model/elasticsearch-model.gemspec
@@ -27,7 +27,7 @@ Gem::Specification.new do |s|
   s.add_dependency "activesupport",       '> 3'
   s.add_dependency "hashie"
 
-  s.add_development_dependency "bundler", "~> 1.3"
+  s.add_development_dependency "bundler"
   s.add_development_dependency "rake", "~> 11.1"
 
   s.add_development_dependency "elasticsearch-extensions"
diff --git a/elasticsearch-model/gemfiles/3.0.gemfile b/elasticsearch-model/gemfiles/3.0.gemfile
index b0141ef48..ebb597f63 100644
--- a/elasticsearch-model/gemfiles/3.0.gemfile
+++ b/elasticsearch-model/gemfiles/3.0.gemfile
@@ -10,7 +10,7 @@ gemspec path: '../'
 gem 'activemodel',  '>= 3.0'
 gem 'activerecord', '~> 3.2'
 gem 'mongoid',      '>= 3.0'
-gem 'sqlite3' unless defined?(JRUBY_VERSION)
+gem 'sqlite3', '~> 1.3.6' unless defined?(JRUBY_VERSION)
 
 group :development, :testing do
   gem 'rspec'
diff --git a/elasticsearch-model/gemfiles/4.0.gemfile b/elasticsearch-model/gemfiles/4.0.gemfile
index f8acebc38..6837398bb 100644
--- a/elasticsearch-model/gemfiles/4.0.gemfile
+++ b/elasticsearch-model/gemfiles/4.0.gemfile
@@ -9,7 +9,7 @@ gemspec path: '../'
 
 gem 'activemodel',  '~> 4'
 gem 'activerecord', '~> 4'
-gem 'sqlite3' unless defined?(JRUBY_VERSION)
+gem 'sqlite3', '~> 1.3.6' unless defined?(JRUBY_VERSION)
 gem 'mongoid', '~> 5'
 
 group :development, :testing do
diff --git a/elasticsearch-persistence/elasticsearch-persistence.gemspec b/elasticsearch-persistence/elasticsearch-persistence.gemspec
index 9b171ec44..c09528577 100644
--- a/elasticsearch-persistence/elasticsearch-persistence.gemspec
+++ b/elasticsearch-persistence/elasticsearch-persistence.gemspec
@@ -29,7 +29,7 @@ Gem::Specification.new do |s|
   s.add_dependency "activemodel",         '> 4'
   s.add_dependency "hashie"
 
-  s.add_development_dependency "bundler", "~> 1.5"
+  s.add_development_dependency "bundler"
   s.add_development_dependency "rake", "~> 11.1"
 
   s.add_development_dependency "oj" unless defined?(JRUBY_VERSION)
diff --git a/elasticsearch-rails/elasticsearch-rails.gemspec b/elasticsearch-rails/elasticsearch-rails.gemspec
index e4ad351ba..744d2fcb4 100644
--- a/elasticsearch-rails/elasticsearch-rails.gemspec
+++ b/elasticsearch-rails/elasticsearch-rails.gemspec
@@ -23,7 +23,7 @@ Gem::Specification.new do |s|
 
   s.required_ruby_version = ">= 1.9.3"
 
-  s.add_development_dependency "bundler", "~> 1.3"
+  s.add_development_dependency "bundler"
   s.add_development_dependency "rake", "~> 11.1"
 
   s.add_development_dependency "elasticsearch-extensions"