diff --git a/Gemfile b/Gemfile
index c6e1599..ea108bc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -64,7 +64,7 @@ if File.exist?(database_file)
       when 'mysql'
         gem "activerecord-jdbcmysql-adapter", :platforms => :jruby
       when /postgresql/
-        gem "pg", "~> 0.17.1", :platforms => [:mri, :mingw, :x64_mingw]
+        gem "pg", "~> 0.18.1", :platforms => [:mri, :mingw, :x64_mingw]
         gem "activerecord-jdbcpostgresql-adapter", :platforms => :jruby
       when /sqlite3/
         gem "sqlite3", :platforms => [:mri, :mingw, :x64_mingw]