diff --git a/roles/matrix-nginx-proxy/defaults/main.yml b/roles/matrix-nginx-proxy/defaults/main.yml
index 8c57928f..6932c8c0 100644
--- a/roles/matrix-nginx-proxy/defaults/main.yml
+++ b/roles/matrix-nginx-proxy/defaults/main.yml
@@ -476,7 +476,7 @@ matrix_ssl_lets_encrypt_staging: false
 # Learn more here: https://eff-certbot.readthedocs.io/en/stable/using.html#changing-the-acme-server
 matrix_ssl_lets_encrypt_server: ''
 
-matrix_ssl_lets_encrypt_certbot_docker_image: "{{ matrix_container_global_registry_prefix }}certbot/certbot:{{ matrix_ssl_architecture }}-v1.21.0"
+matrix_ssl_lets_encrypt_certbot_docker_image: "{{ matrix_container_global_registry_prefix }}certbot/certbot:{{ matrix_ssl_architecture }}-v1.22.0"
 matrix_ssl_lets_encrypt_certbot_docker_image_force_pull: "{{ matrix_ssl_lets_encrypt_certbot_docker_image.endswith(':latest') }}"
 matrix_ssl_lets_encrypt_certbot_standalone_http_port: 2402
 matrix_ssl_lets_encrypt_support_email: ~
@@ -555,5 +555,5 @@ matrix_nginx_proxy_synapse_frontend_proxy_locations: []
 # The amount of worker processes and connections
 # Consider increasing these when you are expecting high amounts of traffic
 # http://nginx.org/en/docs/ngx_core_module.html#worker_connections
-matrix_nginx_proxy_worker_processes: 1
+matrix_nginx_proxy_worker_processes: auto
 matrix_nginx_proxy_worker_connections: 1024