diff --git a/boxr.gemspec b/boxr.gemspec
index 0083e47..0601a78 100644
--- a/boxr.gemspec
+++ b/boxr.gemspec
@@ -20,7 +20,7 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = '>= 2.0'
 
-  spec.add_development_dependency "bundler", "~> 1.6"
+  spec.add_development_dependency "bundler", "~> 2.3"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "rspec", "~> 3.1"
   spec.add_development_dependency "simplecov", "~> 0.9"
diff --git a/lib/boxr/version.rb b/lib/boxr/version.rb
index baea81a..eb2cfcc 100644
--- a/lib/boxr/version.rb
+++ b/lib/boxr/version.rb
@@ -1,3 +1,3 @@
 module Boxr
-  VERSION = "1.19.0".freeze
+  VERSION = "1.20.0".freeze
 end