diff --git a/manifests/swh.pp b/manifests/swh.pp
index 1ea1276..7dbfdd1 100644
--- a/manifests/swh.pp
+++ b/manifests/swh.pp
@@ -1,51 +1,51 @@
 # Base class for Software Heritage-specific configuration
 
 class profile::swh {
   $swh_base_directory = hiera('swh::base_directory')
   $swh_conf_directory = hiera('swh::conf_directory')
   $swh_global_conf_file = hiera('swh::global_conf::file')
   $swh_global_conf_contents = hiera('swh::global_conf::contents')
   $swh_log_directory = hiera('swh::log_directory')
 
   $swh_logrotate_conf = '/etc/logrotate.d/softwareheritage'
 
   $swh_mirror_location = hiera('swh::debian_mirror::location')
 
   file {[
     $swh_base_directory,
     $swh_conf_directory,
     $swh_log_directory,
   ]:
     ensure => directory,
     owner  => 'root',
     group  => 'root',
     mode   => '0755',
   }
 
   file {$swh_global_conf_file:
     ensure  => 'file',
     owner   => 'root',
     group   => 'root',
     mode    => '0644',
     content => $swh_global_conf_contents,
   }
 
   file {$swh_logrotate_conf:
     ensure  => file,
     owner   => 'root',
     group   => 'root',
     mode    => '0644',
     content => template('profile/swh/logrotate.conf.erb'),
   }
 
   include ::apt
   ::apt::source {'softwareheritage':
     comment        => 'Software Heritage specific package repository',
     location       => $swh_mirror_location,
     release        => $::lsbdistcodename,
     repos          => 'main',
     allow_unsigned => true,
-  }
+  } ~> Exec['apt_update'] -> Package <||>
 
   include profile::swh::deploy
 }