diff --git a/yard-cucumber.gemspec b/yard-cucumber.gemspec
index 83260e3..0dbb059 100644
--- a/yard-cucumber.gemspec
+++ b/yard-cucumber.gemspec
@@ -57,8 +57,8 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rake', '~> 10'
 
   s.add_dependency 'gherkin', '>= 4.0', '< 6.0'
-  s.add_dependency 'cucumber', '>= 2.0', '< 4.0'
-  s.add_dependency 'yard', '~> 0.8', '>= 0.8.1'
+  s.add_dependency 'cucumber', '>= 2.0', '< 5.0'
+  s.add_dependency 'yard', '~> 0.9', '>= 0.9.1'
 
   s.rubygems_version   = "1.3.7"
   s.files            = `git ls-files`.split("\n")