diff --git a/docx_replace.gemspec b/docx_replace.gemspec
index ebd2df1..cb85cc5 100644
--- a/docx_replace.gemspec
+++ b/docx_replace.gemspec
@@ -17,7 +17,7 @@ Gem::Specification.new do |gem|
   gem.executables   = gem.files.grep(%r{^bin/}).map{ |f| File.basename(f) }
   gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
   gem.require_paths = ["lib"]
-  gem.add_runtime_dependency 'rubyzip', '~> 1.2', '>= 1.2.1'
+  gem.add_runtime_dependency 'rubyzip', '>= 2.3', '< 4'
   gem.add_development_dependency "rake"
   gem.add_development_dependency "rspec"
 end
diff --git a/lib/docx_replace.rb b/lib/docx_replace.rb
index 9bb0565..0e702df 100644
--- a/lib/docx_replace.rb
+++ b/lib/docx_replace.rb
@@ -70,7 +70,7 @@ def write_back_to_file(new_path=nil)
         path = new_path
       end
       FileUtils.mv(temp_file.path, path)
-      @zip_file = Zip::File.new(path, true)
+      @zip_file = Zip::File.new(path)
     end
   end
 end