diff --git a/network/firewall.sls b/network/firewall.sls
index 4e67bd3..62329da 100644
--- a/network/firewall.sls
+++ b/network/firewall.sls
@@ -10,7 +10,7 @@ network_firewall_rules:
     - template: jinja
     - context:
         STATE: {{ sls }}
-        ALLOWED_PORTS: [443, 25565]
+        ALLOWED_PORTS: [443, 25565, 51871]
     - user: root
     - group: root
     - mode: '0600'