diff --git a/swh/lister/bitbucket/__init__.py b/swh/lister/bitbucket/__init__.py
index 372e8c0..207a35e 100644
--- a/swh/lister/bitbucket/__init__.py
+++ b/swh/lister/bitbucket/__init__.py
@@ -1,13 +1,12 @@
 # Copyright (C) 2019-2021 the Software Heritage developers
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 
 def register():
     from .lister import BitbucketLister
 
     return {
-        "models": [],
         "lister": BitbucketLister,
         "task_modules": ["%s.tasks" % __name__],
     }
diff --git a/swh/lister/cran/__init__.py b/swh/lister/cran/__init__.py
index 6c085ee..a1cdbc5 100644
--- a/swh/lister/cran/__init__.py
+++ b/swh/lister/cran/__init__.py
@@ -1,13 +1,12 @@
-# Copyright (C) 2019 the Software Heritage developers
+# Copyright (C) 2019-2021 the Software Heritage developers
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 
 def register():
     from .lister import CRANLister
 
     return {
-        "models": [],
         "lister": CRANLister,
         "task_modules": ["%s.tasks" % __name__],
     }
diff --git a/swh/lister/debian/__init__.py b/swh/lister/debian/__init__.py
index 0d483d9..8af9d8b 100644
--- a/swh/lister/debian/__init__.py
+++ b/swh/lister/debian/__init__.py
@@ -1,16 +1,15 @@
 # Copyright (C) 2019-2021 The Software Heritage developers
 # See the AUTHORS file at the top-level directory of this distribution
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 from typing import Any, Mapping
 
 
 def register() -> Mapping[str, Any]:
     from .lister import DebianLister
 
     return {
-        "models": [],
         "lister": DebianLister,
         "task_modules": ["%s.tasks" % __name__],
     }
diff --git a/swh/lister/gitea/__init__.py b/swh/lister/gitea/__init__.py
index f258483..4c364b8 100644
--- a/swh/lister/gitea/__init__.py
+++ b/swh/lister/gitea/__init__.py
@@ -1,13 +1,12 @@
 # Copyright (C) 2020 the Software Heritage developers
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 
 def register():
     from .lister import GiteaLister
 
     return {
-        "models": [],
         "lister": GiteaLister,
         "task_modules": ["%s.tasks" % __name__],
     }
diff --git a/swh/lister/github/__init__.py b/swh/lister/github/__init__.py
index 0444507..d243baa 100644
--- a/swh/lister/github/__init__.py
+++ b/swh/lister/github/__init__.py
@@ -1,13 +1,12 @@
 # Copyright (C) 2019 the Software Heritage developers
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 
 def register():
     from .lister import GitHubLister
 
     return {
-        "models": [],
         "lister": GitHubLister,
         "task_modules": ["%s.tasks" % __name__],
     }
diff --git a/swh/lister/npm/__init__.py b/swh/lister/npm/__init__.py
index 7544bd1..1a5f84b 100644
--- a/swh/lister/npm/__init__.py
+++ b/swh/lister/npm/__init__.py
@@ -1,20 +1,19 @@
 # Copyright (C) 2019-2021 the Software Heritage developers
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 
 def register():
     from .lister import NpmLister
 
     return {
-        "models": [],
         "lister": NpmLister,
         "task_modules": ["%s.tasks" % __name__],
         "task_types": {
             "list-npm-full": {
                 "default_interval": "7 days",
                 "min_interval": "7 days",
                 "max_interval": "7 days",
             },
         },
     }
diff --git a/swh/lister/phabricator/__init__.py b/swh/lister/phabricator/__init__.py
index b08cdc9..17bb00e 100644
--- a/swh/lister/phabricator/__init__.py
+++ b/swh/lister/phabricator/__init__.py
@@ -1,13 +1,12 @@
-# Copyright (C) 2019 the Software Heritage developers
+# Copyright (C) 2019-2021 the Software Heritage developers
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 
 def register():
     from .lister import PhabricatorLister
 
     return {
-        "models": [],
         "lister": PhabricatorLister,
         "task_modules": ["%s.tasks" % __name__],
     }
diff --git a/swh/lister/pypi/__init__.py b/swh/lister/pypi/__init__.py
index 29a9f87..3637c00 100644
--- a/swh/lister/pypi/__init__.py
+++ b/swh/lister/pypi/__init__.py
@@ -1,13 +1,12 @@
-# Copyright (C) 2019 the Software Heritage developers
+# Copyright (C) 2019-2021 the Software Heritage developers
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 
 def register():
     from .lister import PyPILister
 
     return {
-        "models": [],
         "lister": PyPILister,
         "task_modules": ["%s.tasks" % __name__],
     }