diff --git a/MANIFEST.in b/MANIFEST.in
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,3 +1,4 @@
 include Makefile
 include requirements.txt
+include requirements-swh.txt
 include version.txt
diff --git a/requirements-swh.txt b/requirements-swh.txt
new file mode 100644
--- /dev/null
+++ b/requirements-swh.txt
@@ -0,0 +1 @@
+swh.core
diff --git a/requirements.txt b/requirements.txt
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,5 +8,4 @@
 psycopg2
 vcversioner
 
-swh.core
 
diff --git a/swh/scheduler/celery_backend/listener.py b/swh/scheduler/celery_backend/listener.py
--- a/swh/scheduler/celery_backend/listener.py
+++ b/swh/scheduler/celery_backend/listener.py
@@ -172,6 +172,7 @@
 
     recv.capture(limit=None, timeout=None, wakeup=True)
 
+
 if __name__ == '__main__':
     main_backend = SchedulerBackend()
     event_monitor(main_app, main_backend)
diff --git a/swh/scheduler/celery_backend/runner.py b/swh/scheduler/celery_backend/runner.py
--- a/swh/scheduler/celery_backend/runner.py
+++ b/swh/scheduler/celery_backend/runner.py
@@ -49,6 +49,7 @@
 
         backend.commit()
 
+
 if __name__ == '__main__':
     for module in main_app.conf.CELERY_IMPORTS:
         __import__(module)