diff --git a/site-modules/profile/manifests/swh/deploy/base_indexer.pp b/site-modules/profile/manifests/swh/deploy/base_indexer.pp
index eed7f29d..fe29a6bb 100644
--- a/site-modules/profile/manifests/swh/deploy/base_indexer.pp
+++ b/site-modules/profile/manifests/swh/deploy/base_indexer.pp
@@ -1,34 +1,34 @@
 # Base class for indexer related manifests
 class profile::swh::deploy::base_indexer {
   $config_directory = lookup('swh::deploy::base_indexer::config_directory')
   $service_basename = "swh-indexer-journal-client"
   $unit_name = "${service_basename}@.service"
 
   $user = lookup("swh::deploy::indexer::user")
   $group = lookup("swh::deploy::indexer::group")
   $sentry_name = 'indexer'
 
   file {$config_directory:
     ensure => 'directory',
     owner  => 'swhworker',
     group  => 'swhworker',
     mode   => '0755',
     purge   => true,
     force   => true,
     recurse => true,
   }
 
-  $packages = ['python3-swh.indexer']
+  $packages = ['python3-swh.indexer', 'python3-rdflib-jsonld']
   package {$packages:
     ensure => 'present',
   }
 
   # Template uses variables
   #  - $user
   #  - $group
   #  - $config_directory
   ::systemd::unit_file {$unit_name:
     ensure  => present,
     content => template("profile/swh/deploy/journal/${unit_name}.erb"),
   }
 }