rspec-cells.gemspec in rspec-cells-0.3.7 vs rspec-cells.gemspec in rspec-cells-0.3.8

@@ -24,11 +24,12 @@
   s.files         = `git ls-files`.split("\n")
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
   s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   s.require_paths = ["lib"]
 
-  s.add_runtime_dependency 'rspec-rails', '< 6.0'
+  s.add_runtime_dependency 'rspec-rails', ">= 3.0.0", "< 6.1.0"
   s.add_runtime_dependency "cells",       ">= 4.0.0", "< 6.0.0"
 
 
   s.add_development_dependency "capybara" # FIXME: please make test for Capybara run.
+  s.add_development_dependency "appraisal", "~> 2.0"
 end