diff --git a/roles/synapse/defaults/main/container.yml b/roles/synapse/defaults/main/container.yml
index f17c2e0..5ca01b8 100644
--- a/roles/synapse/defaults/main/container.yml
+++ b/roles/synapse/defaults/main/container.yml
@@ -30,7 +30,6 @@ synapse_container_ports: ~
 synapse_container_labels: ~
 synapse_container_ulimits: ~
 synapse_container_networks: ~
-synapse_container_purge_networks: ~
 synapse_container_dns_servers: ~
 synapse_container_etc_hosts: ~
 synapse_container_memory: ~
diff --git a/roles/synapse/tasks/deploy-docker.yml b/roles/synapse/tasks/deploy-docker.yml
index fbcb62d..c596f46 100644
--- a/roles/synapse/tasks/deploy-docker.yml
+++ b/roles/synapse/tasks/deploy-docker.yml
@@ -22,7 +22,6 @@
     ulimits: "{{ synapse_container_ulimits | default(omit, true) }}"
     volumes: "{{ synapse_container_all_volumes }}"
     networks: "{{ synapse_container_networks | default(omit, true) }}"
-    purge_networks: "{{ synapse_container_purge_networks | default(omit, true) }}"
     dns_servers: "{{ synapse_container_dns_servers | default(omit, true) }}"
     etc_hosts: "{{ synapse_container_etc_hosts | default(omit, true) }}"
     memory: "{{ synapse_container_memory | default(omit, true) }}"