diff --git a/build/signals.py b/build/signals.py
index a690108..fa8d742 100644
--- a/build/signals.py
+++ b/build/signals.py
@@ -15,19 +15,21 @@
 from datetime import timedelta
 
 import structlog
+from django.apps import apps
 from django.db.models.signals import post_save
 from django.dispatch import receiver
 from django.utils import timezone
 
 from .conf import settings
-from .models import BuildRelease
 from .tasks import build_release
 from .tasks import build_resume
 
 logger = structlog.get_logger(__name__)
 
 
-@receiver(post_save, sender=BuildRelease, dispatch_uid="build_br_manage")
+@receiver(
+    post_save, sender="build.BuildRelease", dispatch_uid="build_br_manage"
+)
 def br_manage(sender, **kwargs):
     if kwargs["created"]:
         instance = kwargs["instance"]
@@ -51,6 +53,7 @@ def br_manage(sender, **kwargs):
     dispatch_uid="build_jbi_manage",
 )
 def jbi_manage(sender, **kwargs):
+    BuildRelease = apps.get_model("build", "BuildRelease")
     if not kwargs["created"]:
         return
     jbi = kwargs["instance"]
diff --git a/build/tasks.py b/build/tasks.py
index 578df4d..6da47cd 100644
--- a/build/tasks.py
+++ b/build/tasks.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2017-2020 The Sipwise Team - http://sipwise.com
+# Copyright (C) 2017-2022 The Sipwise Team - http://sipwise.com
 #
 # This program is free software: you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by the Free
@@ -14,18 +14,18 @@
 # with this program.  If not, see <http://www.gnu.org/licenses/>.
 import structlog
 from celery import shared_task
+from django.apps import apps
 
 from .conf import settings
-from .models import BuildRelease
 from .utils import trigger_build
 from .utils import trigger_copy_deps
-from repoapi.celery import app
 
 logger = structlog.get_logger(__name__)
 
 
-@app.task(bind=True)
+@shared_task(bind=True)
 def build_release(self, pk):
+    BuildRelease = apps.get_model("build", "BuildRelease")
     log = logger.bind(pk=pk)
     br = BuildRelease.objects
     try:
@@ -47,6 +47,7 @@ def build_release(self, pk):
 
 @shared_task(ignore_result=True)
 def build_project(pk, project):
+    BuildRelease = apps.get_model("build", "BuildRelease")
     log = logger.bind(project=project, pk=pk)
     try:
         br = BuildRelease.objects.get(id=pk)
@@ -66,6 +67,7 @@ def build_project(pk, project):
 
 @shared_task(ignore_result=True)
 def build_resume(pk):
+    BuildRelease = apps.get_model("build", "BuildRelease")
     log = logger.bind(pk=pk)
     try:
         br = BuildRelease.objects.get(id=pk)
diff --git a/hotfix/tasks.py b/hotfix/tasks.py
index 4536a49..bc50a96 100644
--- a/hotfix/tasks.py
+++ b/hotfix/tasks.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2016-2020 The Sipwise Team - http://sipwise.com
+# Copyright (C) 2016-2022 The Sipwise Team - http://sipwise.com
 #
 # This program is free software: you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by the Free
@@ -12,16 +12,17 @@
 #
 # You should have received a copy of the GNU General Public License along
 # with this program.  If not, see <http://www.gnu.org/licenses/>.
+import structlog
 from celery import shared_task
-from celery.utils.log import get_task_logger
+from django.apps import apps
 
 from .utils import process_hotfix
-from repoapi.models import JenkinsBuildInfo
 
-logger = get_task_logger(__name__)
+logger = structlog.get_logger(__name__)
 
 
 @shared_task(ignore_result=True)
 def hotfix_released(jbi_id, path):
+    JenkinsBuildInfo = apps.get_model("repoapi", "JenkinsBuildInfo")
     jbi = JenkinsBuildInfo.objects.get(pk=jbi_id)
     process_hotfix(str(jbi), jbi.projectname, path)
diff --git a/release_changed/tasks.py b/release_changed/tasks.py
index 8ac9941..2d5f1db 100644
--- a/release_changed/tasks.py
+++ b/release_changed/tasks.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2020 The Sipwise Team - http://sipwise.com
+# Copyright (C) 2020-2022 The Sipwise Team - http://sipwise.com
 #
 # This program is free software: you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by the Free
@@ -14,18 +14,17 @@
 # with this program.  If not, see <http://www.gnu.org/licenses/>.
 import json
 
+import structlog
 from celery import shared_task
-from celery.utils.log import get_task_logger
 from django.apps import apps
 
-from .models import ReleaseChanged
-
-logger = get_task_logger(__name__)
+logger = structlog.get_logger(__name__)
 
 
 @shared_task(ignore_result=True)
 def process_result(jbi_id, path_envVars):
     JenkinsBuildInfo = apps.get_model("repoapi", "JenkinsBuildInfo")
+    ReleaseChanged = apps.get_model("release_changed", "ReleaseChanged")
     jbi = JenkinsBuildInfo.objects.get(id=jbi_id)
     with open(path_envVars) as data_file:
         data = json.load(data_file)
diff --git a/release_dashboard/tasks.py b/release_dashboard/tasks.py
index 158b7fb..5d48c98 100644
--- a/release_dashboard/tasks.py
+++ b/release_dashboard/tasks.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2016-2020 The Sipwise Team - http://sipwise.com
+# Copyright (C) 2016-2022 The Sipwise Team - http://sipwise.com
 #
 # This program is free software: you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by the Free
@@ -12,17 +12,15 @@
 #
 # You should have received a copy of the GNU General Public License along
 # with this program.  If not, see <http://www.gnu.org/licenses/>.
+import structlog
 from celery import shared_task
-from celery.utils.log import get_task_logger
+from django.apps import apps
 
 from .conf import settings
-from .models import DockerImage
-from .models import DockerTag
-from .models import Project
 from .utils import build
 from .utils import docker
 
-logger = get_task_logger(__name__)
+logger = structlog.get_logger(__name__)
 
 
 @shared_task(ignore_result=True)
@@ -38,6 +36,8 @@ def gerrit_fetch_all():
 
 @shared_task(ignore_result=True)
 def docker_fetch_info(imagename):
+    DockerImage = apps.get_model("release_dashboard", "DockerImage")
+    DockerTag = apps.get_model("release_dashboard", "DockerTag")
     image = DockerImage.objects.get(name=imagename)
     tags = docker.get_docker_tags(imagename)
     for tagname in tags:
@@ -50,6 +50,8 @@ def docker_fetch_info(imagename):
 
 @shared_task(ignore_result=True)
 def docker_fetch_project(projectname):
+    DockerImage = apps.get_model("release_dashboard", "DockerImage")
+    Project = apps.get_model("release_dashboard", "Project")
     DockerImage.objects.filter(project__name=projectname).delete()
     images = docker.get_docker_repositories()
     project = Project.objects.get(name=projectname)
@@ -61,6 +63,8 @@ def docker_fetch_project(projectname):
 
 @shared_task(ignore_result=True)
 def docker_fetch_all():
+    DockerImage = apps.get_model("release_dashboard", "DockerImage")
+    Project = apps.get_model("release_dashboard", "Project")
     DockerImage.objects.all().delete()
     images = docker.get_docker_repositories()
     logger.debug("images: %s" % images)
@@ -74,6 +78,7 @@ def docker_fetch_all():
 
 @shared_task(ignore_result=True)
 def docker_remove_tag(image_name, tag_name):
+    DockerTag = apps.get_model("release_dashboard", "DockerTag")
     tag = DockerTag.objects.get(name=tag_name, image__name=image_name)
     docker.delete_tag(image_name, tag.reference, tag_name)
     tag.delete()