diff --git a/Gemfile.lock b/Gemfile.lock
index cb57a56..40b9b0a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,7 +4,7 @@ PATH
     iron_worker_ng (1.1.0)
       bundler
       iron_core (>= 1.0.0)
-      rubyzip (= 0.9.9)
+      rubyzip (>= 1.0.0)
 
 GEM
   remote: https://rubygems.org/
@@ -57,7 +57,7 @@ GEM
       rest_client (>= 1.7.1)
     rest_client (1.7.2)
       netrc (~> 0.7.7)
-    rubyzip (0.9.9)
+    rubyzip (1.1.0)
     simple_oauth (0.2.0)
     test-unit (2.5.5)
     thread_safe (0.1.3)
diff --git a/iron_worker_ng.gemspec b/iron_worker_ng.gemspec
index 3b001ab..db7aad6 100644
--- a/iron_worker_ng.gemspec
+++ b/iron_worker_ng.gemspec
@@ -18,7 +18,7 @@ Gem::Specification.new do |gem|
 
   gem.add_runtime_dependency 'iron_core', '>= 1.0.0'
   gem.add_runtime_dependency 'bundler'
-  gem.add_runtime_dependency 'rubyzip', '= 0.9.9'
+  gem.add_runtime_dependency 'rubyzip', '>= 1.0.0'
 
   gem.add_development_dependency 'test-unit'
   gem.add_development_dependency 'minitest'
diff --git a/lib/iron_worker_ng/code/container/zip.rb b/lib/iron_worker_ng/code/container/zip.rb
index 757ad3d..5960c33 100644
--- a/lib/iron_worker_ng/code/container/zip.rb
+++ b/lib/iron_worker_ng/code/container/zip.rb
@@ -1,6 +1,6 @@
-require 'zip/zip'
+require 'zip'
 
-Zip.options[:continue_on_exists_proc] = true
+Zip.continue_on_exists_proc = true
 
 module IronWorkerNG
   module Code
@@ -10,7 +10,7 @@ def initialize
           super
 
           @name = @name + '.zip'
-          @zip = ::Zip::ZipFile.open(@name, ::Zip::ZipFile::CREATE)
+          @zip = ::Zip::File.open(@name, ::Zip::File::CREATE)
         end
 
         def add(dest, src)
diff --git a/test/helpers.rb b/test/helpers.rb
index 0ec895b..202cb1b 100644
--- a/test/helpers.rb
+++ b/test/helpers.rb
@@ -31,7 +31,7 @@ def worker_code(str)
 
 def inspect_zip(code)
   zip_file = code.create_container
-  yield Zip::ZipFile.open(zip_file)
+  yield Zip::File.open(zip_file)
   File.unlink zip_file
 end
 
diff --git a/test/test_common_features.rb b/test/test_common_features.rb
index 5d018ec..b4cdad4 100644
--- a/test/test_common_features.rb
+++ b/test/test_common_features.rb
@@ -1,5 +1,5 @@
 require_relative 'helpers'
-require 'zip/zip'
+require 'zip'
 
 class CommonFeaturesTest < IWNGTest