diff --git a/scorm.gemspec b/scorm.gemspec
index dd86e97..3ece4e9 100644
--- a/scorm.gemspec
+++ b/scorm.gemspec
@@ -15,5 +15,5 @@ Gem::Specification.new do |s|
   s.executables        = ['scorm']
   s.default_executable = 'scorm'
 
-  s.add_dependency('rubyzip',  '~> 0.9.4')
+  s.add_dependency('rubyzip', '>= 2.3.0', '< 3.0')
 end
\ No newline at end of file