diff --git a/Gemfile b/Gemfile
index f656c23..1edf195 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,6 +3,6 @@ source "http://rubygems.org"
 
 gem 'rake', '~> 0.8.7'
 gem 'rspec', '~> 2.4.0'
-gem 'activesupport', '~> 3.2.0'
-gem 'activemodel', '~> 3.2.0'
+gem 'activesupport'
+gem 'activemodel'
 # gem 'ruby-debug'
diff --git a/lib/grouped_validations.rb b/lib/grouped_validations.rb
index 4eba31e..7e022e0 100644
--- a/lib/grouped_validations.rb
+++ b/lib/grouped_validations.rb
@@ -1,5 +1,6 @@
 require 'active_model/validations'
 require 'grouped_validations/active_model'
+require 'grouped_validations/callback'
 
 module GroupedValidations
   extend ActiveSupport::Concern
@@ -29,7 +30,7 @@ def validate(*args, &block)
     end
 
     def _define_group_validation_callbacks(group)
-      define_callbacks :"validate_#{group}", :scope => 'validate'
+      define_callbacks :"validate_#{group}", :scope => :callback_method, callback_method: :validate
     end
 
   end
@@ -45,6 +46,7 @@ def valid?(context=nil)
   def groups_valid?(*groups)
     options = groups.extract_options!
     errors.clear
+    run_validations!
     groups.each do |group|
       raise "Validation group '#{group}' not defined" unless validation_groups.include?(group)
       _run_group_validation_callbacks(group, options[:context])
@@ -59,12 +61,12 @@ def grouped_errors(context=nil)
     grouped = {}
 
     with_validation_context(context) do
-      _run_validate_callbacks
+      run_callbacks(:validate)
       grouped[nil] = errors
 
       validation_groups.each do |group|
         @errors = nil
-        send(:"_run_validate_#{group}_callbacks")
+        run_callbacks(:"validate_#{group}")
         grouped[group] = errors
       end
     end
@@ -75,7 +77,7 @@ def grouped_errors(context=nil)
 
   def _run_group_validation_callbacks(group, context=nil)
     with_validation_context(context) do
-      send(:"_run_validate_#{group}_callbacks")
+      run_callbacks(:"validate_#{group}")
     end
   end
 
diff --git a/lib/grouped_validations/callback.rb b/lib/grouped_validations/callback.rb
new file mode 100644
index 0000000..7fa39f7
--- /dev/null
+++ b/lib/grouped_validations/callback.rb
@@ -0,0 +1,5 @@
+class ActiveSupport::Callbacks::Callback
+  def callback_method
+    chain_config[:callback_method]
+  end
+end
\ No newline at end of file