diff --git a/manifests/swh/deploy/objstorage.pp b/manifests/swh/deploy/objstorage.pp
index c6d41a9..0fa0701 100644
--- a/manifests/swh/deploy/objstorage.pp
+++ b/manifests/swh/deploy/objstorage.pp
@@ -1,74 +1,57 @@
 # Deployment of the swh.objstorage.api server
 
 class profile::swh::deploy::objstorage {
   $conf_directory = hiera('swh::deploy::objstorage::conf_directory')
   $conf_file = hiera('swh::deploy::objstorage::conf_file')
   $user = hiera('swh::deploy::objstorage::user')
   $group = hiera('swh::deploy::objstorage::group')
 
   $objstorage_config = hiera('swh::deploy::objstorage::config')
 
   $swh_packages = ['python3-swh.objstorage']
 
-  $uwsgi_listen_address = hiera('swh::deploy::objstorage::uwsgi::listen')
-  $uwsgi_workers = hiera('swh::deploy::objstorage::uwsgi::workers')
-  $uwsgi_http_workers = hiera('swh::deploy::objstorage::uwsgi::http_workers')
-  $uwsgi_http_keepalive = hiera('swh::deploy::objstorage::uwsgi::http_keepalive')
-  $uwsgi_http_timeout = hiera('swh::deploy::objstorage::uwsgi::http_timeout')
-  $uwsgi_max_requests = hiera('swh::deploy::objstorage::uwsgi::max_requests')
-  $uwsgi_max_requests_delta = hiera('swh::deploy::objstorage::uwsgi::max_requests_delta')
-  $uwsgi_reload_mercy = hiera('swh::deploy::objstorage::uwsgi::reload_mercy')
+  $backend_listen_address = hiera('swh::deploy::objstorage::backend::listen')
+  $backend_workers = hiera('swh::deploy::objstorage::backend::workers')
+  $backend_http_keepalive = hiera('swh::deploy::objstorage::backend::http_keepalive')
+  $backend_http_timeout = hiera('swh::deploy::objstorage::backend::http_timeout')
+  $backend_reload_mercy = hiera('swh::deploy::objstorage::backend::reload_mercy')
 
   include ::uwsgi
 
   package {$swh_packages:
     ensure  => latest,
     require => Apt::Source['softwareheritage'],
   }
 
   file {$conf_directory:
     ensure => directory,
     owner  => 'root',
     group  => $group,
     mode   => '0750',
   }
 
   file {$conf_file:
     ensure  => present,
     owner   => 'root',
     group   => $group,
     mode    => '0640',
     content => inline_template("<%= @objstorage_config.to_yaml %>\n"),
+    notify  => Service['gunicorn-swh-objstorage'],
   }
 
-  ::uwsgi::site {'swh-objstorage':
-    ensure   => enabled,
-    settings => {
-      plugin              => 'python3',
-      workers             => $uwsgi_workers,
-      max_requests        => $uwsgi_max_requests,
-      max_requests_delta  => $uwsgi_max_requests_delta,
-      worker_reload_mercy => $uwsgi_reload_mercy,
-      reload_mercy        => $uwsgi_reload_mercy,
-      uid                 => $user,
-      gid                 => $user,
-      umask               => '022',
-      module              => 'swh.objstorage.api.server',
-      callable            => 'run_from_webserver',
+  ::gunicorn::instance {'swh-objstorage':
+    ensure     => enabled,
+    user       => $user,
+    group      => $group,
+    executable => 'swh.objstorage.api.server:run_from_webserver',
+    settings   => {
+      bind             => $backend_listen_address,
+      workers          => $backend_workers,
+      worker_class     => 'sync',
+      timeout          => $backend_http_timeout,
+      graceful_timeout => $backend_reload_mercy,
+      keepalive        => $backend_http_keepalive,
     }
   }
 
-  ::uwsgi::site {'swh-objstorage-http':
-    ensure => enabled,
-    settings => {
-      workers        => 0,
-      http           => $uwsgi_listen_address,
-      http_workers   => $uwsgi_http_workers,
-      http_keepalive => $uwsgi_http_keepalive,
-      http_timeout   => $uwsgi_http_timeout,
-      http_to        => '/var/run/uwsgi/app/swh-objstorage/socket',
-      uid            => $user,
-      gid            => $user,
-    }
-  }
 }