pr.gemspec in pr-0.0.6 vs pr.gemspec in pr-0.0.7

@@ -14,12 +14,29 @@
   s.files         = `git ls-files`.split("\n")
   s.test_files    = `git ls-files -- {spec,features}/*`.split("\n")
   s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   s.require_paths = ["lib"]
 
-  s.add_development_dependency 'rake'
+  if RUBY_VERSION < '1.9.3'
+    s.add_development_dependency 'rake', '< 11'
+    s.add_development_dependency 'i18n', '< 0.7.0'
+    s.add_development_dependency 'gherkin', '< 3.2'
+    s.add_development_dependency 'cucumber', '< 2'
+  elsif RUBY_VERSION.to_f < 2.3
+    s.add_development_dependency 'cucumber', '< 2'
+    s.add_development_dependency 'rake', '< 12'
+  else
+    s.add_development_dependency 'cucumber'
+    s.add_development_dependency 'rake', '> 13'
+  end
+
   s.add_development_dependency 'rspec'
-  s.add_development_dependency 'cucumber'
   s.add_development_dependency 'aruba'
-  s.add_development_dependency 'activemodel'
 
+  if RUBY_VERSION < '2.2.2'
+    s.add_development_dependency 'activemodel', '< 5'
+  else
+    s.add_development_dependency 'activemodel', '> 5'
+    # Only because Github flags dependency security warnings
+    s.add_development_dependency 'activesupport', '> 5'
+  end
 end