diff --git a/manifests/init.pp b/manifests/init.pp
index 39e70f4..4d66804 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -1,68 +1,79 @@
 # == Class: mediawiki
 #
 # Full description of class mediawiki here.
 #
 # === Parameters
 #
 # Document parameters here.
 #
 # [*sample_parameter*]
 #   Explanation of what this parameter affects and what it defaults to.
 #   e.g. "Specify one or more upstream ntp servers as an array."
 #
 # === Variables
 #
 # Here you should define a list of variables that this module would require.
 #
 # [*sample_variable*]
 #   Explanation of how this variable affects the funtion of this class and if
 #   it has a default. e.g. "The parameter enc_ntp_servers must be set by the
 #   External Node Classifier as a comma separated list of hostnames." (Note,
 #   global variables should be avoided in favor of class parameters as
 #   of Puppet 2.6.)
 #
 # === Examples
 #
 #  class { 'mediawiki':
 #    servers => [ 'pool.ntp.org', 'ntp.local.company.com' ],
 #  }
 #
 # === Authors
 #
 # Author Name <author@domain.com>
 #
 # === Copyright
 #
 # Copyright 2016 Your name here, unless otherwise noted.
 #
 class mediawiki {
   $packages = [
     'mediawiki',
     'mediawiki-extensions',
     'imagemagick',
   ]
 
-  # package {$packages:
-  #   ensure => installed,
-  # }
+  package {$packages:
+    ensure => installed,
+  }
+
+  apt::pin {'mediawiki':
+    packages => ['mediawiki'],
+    priority => 1001,
+    version  => '1:1.19.20+dfsg-2.3',
+  }
+  apt::pin {'mediawiki-extensions':
+    packages => ['mediawiki-extensions'],
+    priority => 1001,
+    version  => '3.7',
+  }
 
   $config_meta = '/etc/mediawiki/LocalSettings.php'
   concat {$config_meta:
     ensure  => present,
     owner   => 'root',
     group   => 'www-data',
     mode    => '0640',
     require => Package['mediawiki'],
   }
 
   concat::fragment {'mediawiki_config_meta_header':
     target => $config_meta,
     source => 'puppet:///modules/mediawiki/config_meta_header',
     order  => '00',
   }
   concat::fragment {'mediawiki_config_meta_footer':
     target => $config_meta,
     source => 'puppet:///modules/mediawiki/config_meta_footer',
     order  => '99',
   }
 }