diff --git a/jekyll.gemspec b/jekyll.gemspec
index b9d23a11..205b03b0 100644
--- a/jekyll.gemspec
+++ b/jekyll.gemspec
@@ -37,7 +37,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency('redgreen', "~> 1.2")
   s.add_development_dependency('shoulda', "~> 3.3.2")
   s.add_development_dependency('rr', "~> 1.0")
-  s.add_development_dependency('cucumber', "~> 1.2.1")
+  s.add_development_dependency('cucumber', "~> 1.2.1", '!= 1.2.4')
   s.add_development_dependency('RedCloth', "~> 4.2")
   s.add_development_dependency('rdiscount', "~> 1.6")
   s.add_development_dependency('redcarpet', "~> 2.2.2")