diff --git a/examples/ar-3.x/Gemfile b/examples/ar-3.x/Gemfile
index 7d69941..37b52fe 100644
--- a/examples/ar-3.x/Gemfile
+++ b/examples/ar-3.x/Gemfile
@@ -1,6 +1,6 @@
 source 'http://rubygems.org'
 
-gem 'rails', '3.1.0'
+gem 'rails', '3.2.17'
 gem 'mysql2'
 
 # Bundle edge Rails instead:
diff --git a/examples/ar-3.x/Gemfile.lock b/examples/ar-3.x/Gemfile.lock
index bb486c7..1505a52 100644
--- a/examples/ar-3.x/Gemfile.lock
+++ b/examples/ar-3.x/Gemfile.lock
@@ -1,91 +1,91 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    actionmailer (3.1.0)
-      actionpack (= 3.1.0)
-      mail (~> 2.3.0)
-    actionpack (3.1.0)
-      activemodel (= 3.1.0)
-      activesupport (= 3.1.0)
+    actionmailer (3.2.17)
+      actionpack (= 3.2.17)
+      mail (~> 2.5.4)
+    actionpack (3.2.17)
+      activemodel (= 3.2.17)
+      activesupport (= 3.2.17)
       builder (~> 3.0.0)
       erubis (~> 2.7.0)
-      i18n (~> 0.6)
-      rack (~> 1.3.2)
-      rack-cache (~> 1.0.3)
-      rack-mount (~> 0.8.2)
+      journey (~> 1.0.4)
+      rack (~> 1.4.5)
+      rack-cache (~> 1.2)
       rack-test (~> 0.6.1)
-      sprockets (~> 2.0.0)
-    activemodel (3.1.0)
-      activesupport (= 3.1.0)
-      bcrypt-ruby (~> 3.0.0)
+      sprockets (~> 2.2.1)
+    activemodel (3.2.17)
+      activesupport (= 3.2.17)
       builder (~> 3.0.0)
-      i18n (~> 0.6)
-    activerecord (3.1.0)
-      activemodel (= 3.1.0)
-      activesupport (= 3.1.0)
-      arel (~> 2.2.1)
+    activerecord (3.2.17)
+      activemodel (= 3.2.17)
+      activesupport (= 3.2.17)
+      arel (~> 3.0.2)
       tzinfo (~> 0.3.29)
-    activeresource (3.1.0)
-      activemodel (= 3.1.0)
-      activesupport (= 3.1.0)
-    activesupport (3.1.0)
+    activeresource (3.2.17)
+      activemodel (= 3.2.17)
+      activesupport (= 3.2.17)
+    activesupport (3.2.17)
+      i18n (~> 0.6, >= 0.6.4)
       multi_json (~> 1.0)
-    arel (2.2.1)
-    bcrypt-ruby (3.0.0)
-    builder (3.0.0)
+    arel (3.0.3)
+    builder (3.0.4)
+    concurrent-ruby (1.1.7)
     erubis (2.7.0)
-    hike (1.2.1)
-    i18n (0.6.0)
-    mail (2.3.0)
-      i18n (>= 0.4.0)
+    hike (1.2.3)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
+    journey (1.0.4)
+    json (1.8.6)
+    mail (2.5.5)
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
-    mime-types (1.16)
-    multi_json (1.0.3)
+    mime-types (1.25.1)
+    multi_json (1.15.0)
     mysql2 (0.3.7)
-    polyglot (0.3.2)
-    rack (1.3.2)
-    rack-cache (1.0.3)
+    polyglot (0.3.5)
+    rack (1.4.7)
+    rack-cache (1.12.0)
       rack (>= 0.4)
-    rack-mount (0.8.3)
-      rack (>= 1.0.0)
-    rack-ssl (1.3.2)
+    rack-ssl (1.3.4)
       rack
-    rack-test (0.6.1)
+    rack-test (0.6.3)
       rack (>= 1.0)
-    rails (3.1.0)
-      actionmailer (= 3.1.0)
-      actionpack (= 3.1.0)
-      activerecord (= 3.1.0)
-      activeresource (= 3.1.0)
-      activesupport (= 3.1.0)
+    rails (3.2.17)
+      actionmailer (= 3.2.17)
+      actionpack (= 3.2.17)
+      activerecord (= 3.2.17)
+      activeresource (= 3.2.17)
+      activesupport (= 3.2.17)
       bundler (~> 1.0)
-      railties (= 3.1.0)
-    railties (3.1.0)
-      actionpack (= 3.1.0)
-      activesupport (= 3.1.0)
+      railties (= 3.2.17)
+    railties (3.2.17)
+      actionpack (= 3.2.17)
+      activesupport (= 3.2.17)
       rack-ssl (~> 1.3.2)
       rake (>= 0.8.7)
       rdoc (~> 3.4)
-      thor (~> 0.14.6)
-    rake (0.9.2)
-    rdoc (3.9.4)
-    sprockets (2.0.0)
+      thor (>= 0.14.6, < 2.0)
+    rake (13.0.1)
+    rdoc (3.12.2)
+      json (~> 1.4)
+    sprockets (2.2.3)
       hike (~> 1.2)
+      multi_json (~> 1.0)
       rack (~> 1.0)
-      tilt (!= 1.3.0, ~> 1.1)
+      tilt (~> 1.1, != 1.3.0)
     sqlite3 (1.3.4)
-    thor (0.14.6)
-    tilt (1.3.3)
-    treetop (1.4.10)
+    thor (1.0.1)
+    tilt (1.4.1)
+    treetop (1.4.15)
       polyglot
       polyglot (>= 0.3.1)
-    tzinfo (0.3.29)
+    tzinfo (0.3.57)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   mysql2
-  rails (= 3.1.0)
+  rails (= 3.2.17)
   sqlite3