diff --git a/testgen.gemspec b/testgen.gemspec
index 75d1178..ea41f77 100644
--- a/testgen.gemspec
+++ b/testgen.gemspec
@@ -18,9 +18,9 @@ Gem::Specification.new do |s|
   s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   s.require_paths = ["lib"]
 
-  s.add_dependency 'thor', '>=0.14.6'
-  s.add_dependency 'cucumber', '>=1.0.0'
-  s.add_dependency 'rspec', '>=2.6.0'
+  s.add_dependency 'thor', '>=0.16.0'
+  s.add_dependency 'cucumber', '>=1.2.0'
+  s.add_dependency 'rspec', '>=2.11.0'
   s.add_dependency 'sys-uname'
   s.add_dependency 'require_all'