diff --git a/lib/spatial_adapter/postgresql.rb b/lib/spatial_adapter/postgresql.rb
index 090aeb7..7cbdef1 100644
--- a/lib/spatial_adapter/postgresql.rb
+++ b/lib/spatial_adapter/postgresql.rb
@@ -3,6 +3,7 @@
 
 module ActiveRecord::ConnectionAdapters
   class PostgreSQLAdapter
+    
     def postgis_version
       select_value("SELECT postgis_full_version()").scan(/POSTGIS="([\d\.]*)"/)[0][0]
     rescue ActiveRecord::StatementInvalid
diff --git a/lib/spatial_adapter/railtie.rb b/lib/spatial_adapter/railtie.rb
index 1668bb8..228c167 100644
--- a/lib/spatial_adapter/railtie.rb
+++ b/lib/spatial_adapter/railtie.rb
@@ -2,7 +2,7 @@ module SpatialAdapter
   class Railtie < Rails::Railtie
     initializer "spatial_adapter.load_current_database_adapter" do
       ActiveSupport.on_load :active_record do
-        adapter = ActiveRecord::Base.configurations[Rails.env]['adapter']
+        adapter = Rails.configuration.database_configuration[Rails.env]['adapter']
         begin
           require "spatial_adapter/#{adapter}"
         rescue LoadError
diff --git a/spatial_adapter.gemspec b/spatial_adapter.gemspec
index e084c79..c566070 100644
--- a/spatial_adapter.gemspec
+++ b/spatial_adapter.gemspec
@@ -34,6 +34,6 @@ Gem::Specification.new do |s|
     s.add_development_dependency 'activerecord-jdbcmysql-adapter'
   end
 
-  s.add_dependency 'activerecord', '>= 2.2.2', '< 3.2.0'
+  s.add_dependency 'activerecord', '>= 2.2.2', '<= 3.2.13'
   s.add_dependency 'GeoRuby', '>= 1.3.0'
 end