diff --git a/manifests/swh/deploy/worker/swh_loader_mercurial.pp b/manifests/swh/deploy/worker/swh_loader_mercurial.pp
new file mode 100644
index 00000000..ca5092f5
--- /dev/null
+++ b/manifests/swh/deploy/worker/swh_loader_mercurial.pp
@@ -0,0 +1,46 @@
+# Deployment for swh-loader-mercurial (disk)
+class profile::swh::deploy::worker::swh_loader_mercurial {
+  include ::profile::swh::deploy::base_loader_git
+
+  $concurrency = hiera('swh::deploy::worker::swh_loader_mercurial::concurrency')
+  $loglevel = hiera('swh::deploy::worker::swh_loader_mercurial::loglevel')
+  $task_broker = hiera('swh::deploy::worker::swh_loader_mercurial::task_broker')
+
+  $config_file = '/etc/softwareheritage/loader/hg.yml'
+  $config = hiera('swh::deploy::worker::swh_loader_mercurial::config')
+
+  $task_modules = ['swh.loader.mercurial.tasks']
+  $task_queues = ['swh_loader_mercurial',
+                  'swh_loader_mercurial_slow',
+                  'swh_loader_mercurial_slow_archive']
+
+  $service_name = 'swh_loader_mercurial'
+
+
+  $packages = ['python3-swh.loader.mercurial']
+
+  package {$packages:
+    ensure => 'latest',
+    notify => Service["swh-worker@$service_name"]
+  }
+
+  ::profile::swh::deploy::worker::instance {$service_name:
+    ensure       => running,
+    concurrency  => $concurrency,
+    loglevel     => $loglevel,
+    task_broker  => $task_broker,
+    task_modules => $task_modules,
+    task_queues  => $task_queues,
+    require      => [
+      File[$config_file],
+    ],
+  }
+
+  file {$config_file:
+    ensure  => 'present',
+    owner   => 'swhworker',
+    group   => 'swhworker',
+    mode    => '0644',
+    content => inline_template("<%= @config.to_yaml %>\n"),
+  }
+}