diff --git a/citadel/indico_citadel/plugin.py b/citadel/indico_citadel/plugin.py
index bb8a884..f100763 100644
--- a/citadel/indico_citadel/plugin.py
+++ b/citadel/indico_citadel/plugin.py
@@ -81,7 +81,7 @@ class CitadelPlugin(LiveSyncPluginBase):
 
     def init(self):
         super().init()
-        self.connect(signals.get_search_providers, self.get_search_providers)
+        self.connect(signals.core.get_search_providers, self.get_search_providers)
         self.connect(signals.plugin.cli, self._extend_indico_cli)
 
     def get_search_providers(self, sender, **kwargs):
diff --git a/livesync/indico_livesync/__init__.py b/livesync/indico_livesync/__init__.py
index 1201585..bfbdb9d 100644
--- a/livesync/indico_livesync/__init__.py
+++ b/livesync/indico_livesync/__init__.py
@@ -20,6 +20,6 @@ from .simplify import SimpleChange, process_records  # noqa: E402
 from .uploader import Uploader  # noqa: E402
 
 
-@signals.import_tasks.connect
+@signals.core.import_tasks.connect
 def _import_tasks(sender, **kwargs):
     import indico_livesync.task  # noqa: F401
diff --git a/livesync/indico_livesync/handler.py b/livesync/indico_livesync/handler.py
index 2a78f7b..ec01e67 100644
--- a/livesync/indico_livesync/handler.py
+++ b/livesync/indico_livesync/handler.py
@@ -30,7 +30,7 @@ from indico_livesync.util import get_excluded_categories, obj_ref
 
 def connect_signals(plugin):
     # request
-    plugin.connect(signals.after_process, _apply_changes)
+    plugin.connect(signals.core.after_process, _apply_changes)
     # moved
     plugin.connect(signals.category.moved, _moved)
     plugin.connect(signals.event.moved, _moved)
diff --git a/payment_manual/indico_payment_manual/plugin.py b/payment_manual/indico_payment_manual/plugin.py
index 847bbf0..bf4a636 100644
--- a/payment_manual/indico_payment_manual/plugin.py
+++ b/payment_manual/indico_payment_manual/plugin.py
@@ -59,7 +59,7 @@ class ManualPaymentPlugin(PaymentPluginMixin, IndicoPlugin):
 
     def init(self):
         super().init()
-        self.connect(signals.get_placeholders, self._get_details_placeholders, sender='manual-payment-details')
+        self.connect(signals.core.get_placeholders, self._get_details_placeholders, sender='manual-payment-details')
 
     def _get_details_placeholders(self, sender, regform, registration, **kwargs):
         from indico_payment_manual.placeholders import (CurrencyPlaceholder, EmailPlaceholder, EventIDPlaceholder,
diff --git a/storage_s3/indico_storage_s3/__init__.py b/storage_s3/indico_storage_s3/__init__.py
index 52d317a..1eb1741 100644
--- a/storage_s3/indico_storage_s3/__init__.py
+++ b/storage_s3/indico_storage_s3/__init__.py
@@ -12,6 +12,6 @@ from indico.util.i18n import make_bound_gettext
 _ = make_bound_gettext('storage_s3')
 
 
-@signals.import_tasks.connect
+@signals.core.import_tasks.connect
 def _import_tasks(sender, **kwargs):
     import indico_storage_s3.task  # noqa: F401
diff --git a/storage_s3/indico_storage_s3/plugin.py b/storage_s3/indico_storage_s3/plugin.py
index 8509c8d..eb5f612 100644
--- a/storage_s3/indico_storage_s3/plugin.py
+++ b/storage_s3/indico_storage_s3/plugin.py
@@ -61,7 +61,7 @@ class S3StoragePlugin(IndicoPlugin):
 
     def init(self):
         super().init()
-        self.connect(signals.get_storage_backends, self._get_storage_backends)
+        self.connect(signals.core.get_storage_backends, self._get_storage_backends)
         self.connect(signals.plugin.cli, self._extend_indico_cli)
 
     def _get_storage_backends(self, sender, **kwargs):