diff --git a/docker/conf/indexer.yml b/docker/conf/indexer.yml
--- a/docker/conf/indexer.yml
+++ b/docker/conf/indexer.yml
@@ -11,6 +11,7 @@
   cls: remote
   url: http://swh-scheduler:5008/
 celery:
+  broker_heartbeat: null
   task_broker: amqp://guest:guest@amqp//
   task_modules:
     - swh.indexer.tasks
diff --git a/docker/conf/lister.yml b/docker/conf/lister.yml
--- a/docker/conf/lister.yml
+++ b/docker/conf/lister.yml
@@ -3,6 +3,7 @@
   url: http://swh-scheduler:5008/
 
 celery:
+  broker_heartbeat: null
   task_broker: amqp://guest:guest@amqp//
   task_queues:
     - swh.lister.bitbucket.tasks.FullBitBucketRelister
diff --git a/docker/conf/loader-deposit.yml b/docker/conf/loader-deposit.yml
--- a/docker/conf/loader-deposit.yml
+++ b/docker/conf/loader-deposit.yml
@@ -13,6 +13,7 @@
       url: http://swh-storage:5002/
 
 celery:
+  broker_heartbeat: null
   task_broker: amqp://guest:guest@amqp//
   task_queues:
     - swh.loader.package.deposit.tasks.LoadDeposit
@@ -24,4 +25,4 @@
     username: test
     password: test
 
-url: 'http://swh-deposit:5006'
+url: "http://swh-deposit:5006"
diff --git a/docker/conf/loader-opam.yml b/docker/conf/loader-opam.yml
--- a/docker/conf/loader-opam.yml
+++ b/docker/conf/loader-opam.yml
@@ -12,6 +12,7 @@
       url: http://swh-storage:5002/
 
 celery:
+  broker_heartbeat: null
   task_broker: amqp://guest:guest@amqp//
   task_queues:
     - swh.loader.package.opam.tasks.LoadOpam
diff --git a/docker/conf/loader.yml b/docker/conf/loader.yml
--- a/docker/conf/loader.yml
+++ b/docker/conf/loader.yml
@@ -12,6 +12,7 @@
       url: http://nginx:5080/storage
 
 celery:
+  broker_heartbeat: null
   task_broker: amqp://guest:guest@amqp//
   task_queues:
     - swh.loader.bzr.tasks.LoadBazaar
diff --git a/docker/conf/scheduler.yml b/docker/conf/scheduler.yml
--- a/docker/conf/scheduler.yml
+++ b/docker/conf/scheduler.yml
@@ -2,6 +2,7 @@
   cls: local
   db: postgresql:///?service=swh-scheduler
 celery:
+  broker_heartbeat: null
   task_broker: amqp://guest:guest@amqp/%2f
   broker_transport_options:
     max_retries: 1
diff --git a/docker/conf/vault-worker-read-replica.yml b/docker/conf/vault-worker-read-replica.yml
--- a/docker/conf/vault-worker-read-replica.yml
+++ b/docker/conf/vault-worker-read-replica.yml
@@ -5,6 +5,7 @@
   cls: remote
   url: http://swh-vault:5005/
 celery:
+  broker_heartbeat: null
   task_broker: amqp://guest:guest@amqp//
   task_modules:
     - swh.vault.cooking_tasks
diff --git a/docker/conf/vault-worker.yml b/docker/conf/vault-worker.yml
--- a/docker/conf/vault-worker.yml
+++ b/docker/conf/vault-worker.yml
@@ -5,6 +5,7 @@
   cls: remote
   url: http://swh-vault:5005/
 celery:
+  broker_heartbeat: null
   task_broker: amqp://guest:guest@amqp//
   task_modules:
     - swh.vault.cooking_tasks