diff --git a/Gemfile b/Gemfile
index e8b52112..36f9efc3 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,6 +4,7 @@ gemspec
 
 gem 'mocha'
 gem 'minitest-rg'
+gem 'railties', '~> 4.2.0'
 
 group :test do
   gem 'strong_parameters'
diff --git a/Gemfile.lock b/Gemfile.lock
index ad002052..f846d29d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,56 +2,73 @@ PATH
   remote: .
   specs:
     inherited_resources (1.5.1)
-      actionpack (>= 3.2, < 4.2)
+      actionpack (>= 3.2, <= 4.2)
       has_scope (~> 0.6.0.rc)
-      railties (>= 3.2, < 4.2)
-      responders (~> 1.0)
+      railties (>= 3.2, <= 4.2)
+      responders (~> 2.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    actionpack (4.1.5)
-      actionview (= 4.1.5)
-      activesupport (= 4.1.5)
-      rack (~> 1.5.2)
+    actionpack (4.2.0)
+      actionview (= 4.2.0)
+      activesupport (= 4.2.0)
+      rack (~> 1.6.0)
       rack-test (~> 0.6.2)
-    actionview (4.1.5)
-      activesupport (= 4.1.5)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-html-sanitizer (~> 1.0, >= 1.0.1)
+    actionview (4.2.0)
+      activesupport (= 4.2.0)
       builder (~> 3.1)
       erubis (~> 2.7.0)
-    activemodel (4.1.5)
-      activesupport (= 4.1.5)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-html-sanitizer (~> 1.0, >= 1.0.1)
+    activemodel (4.2.0)
+      activesupport (= 4.2.0)
       builder (~> 3.1)
-    activesupport (4.1.5)
-      i18n (~> 0.6, >= 0.6.9)
+    activesupport (4.2.0)
+      i18n (~> 0.7)
       json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
-      thread_safe (~> 0.1)
+      thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
     builder (3.2.2)
     erubis (2.7.0)
     has_scope (0.6.0.rc)
       actionpack (>= 3.2, < 5)
       activesupport (>= 3.2, < 5)
-    i18n (0.6.11)
+    i18n (0.7.0)
     json (1.8.1)
+    loofah (2.0.1)
+      nokogiri (>= 1.5.9)
     metaclass (0.0.4)
-    minitest (5.4.1)
+    mini_portile (0.6.2)
+    minitest (5.5.0)
     minitest-rg (5.1.0)
       minitest (~> 5.0)
     mocha (1.1.0)
       metaclass (~> 0.0.1)
-    rack (1.5.2)
+    nokogiri (1.6.5)
+      mini_portile (~> 0.6.0)
+    rack (1.6.0)
     rack-test (0.6.2)
       rack (>= 1.0)
-    railties (4.1.5)
-      actionpack (= 4.1.5)
-      activesupport (= 4.1.5)
+    rails-deprecated_sanitizer (1.0.3)
+      activesupport (>= 4.2.0.alpha)
+    rails-dom-testing (1.0.5)
+      activesupport (>= 4.2.0.beta, < 5.0)
+      nokogiri (~> 1.6.0)
+      rails-deprecated_sanitizer (>= 1.0.1)
+    rails-html-sanitizer (1.0.1)
+      loofah (~> 2.0)
+    railties (4.2.0)
+      actionpack (= 4.2.0)
+      activesupport (= 4.2.0)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
-    rake (10.3.2)
-    responders (1.1.1)
-      railties (>= 3.2, < 4.2)
+    rake (10.4.2)
+    responders (2.0.2)
+      railties (>= 4.2.0.alpha, < 5)
     strong_parameters (0.1.4)
       actionpack (>= 3.2.0)
       activemodel (>= 3.2.0)
@@ -68,4 +85,5 @@ DEPENDENCIES
   inherited_resources!
   minitest-rg
   mocha
+  railties (~> 4.2.0)
   strong_parameters
diff --git a/inherited_resources.gemspec b/inherited_resources.gemspec
index 8575cc39..06e9fcb6 100644
--- a/inherited_resources.gemspec
+++ b/inherited_resources.gemspec
@@ -19,7 +19,7 @@ Gem::Specification.new do |s|
   s.require_paths = ["lib"]
 
   s.add_dependency("responders", "~> 2.0")
-  s.add_dependency("actionpack", ">= 3.2", "< 4.2")
-  s.add_dependency("railties", ">= 3.2", "< 4.2")
+  s.add_dependency("actionpack", ">= 3.2", "<= 4.2")
+  s.add_dependency("railties", ">= 3.2", "<= 4.2")
   s.add_dependency("has_scope",  "~> 0.6.0.rc")
 end