diff --git a/bootnode/bootnode.toml b/bootnode/bootnode.toml
index 229b440..f122c79 100644
--- a/bootnode/bootnode.toml
+++ b/bootnode/bootnode.toml
@@ -7,6 +7,7 @@ base_path = "/home/parity/.local/share/io.parity.ethereum/bootnode"
 [network]
 port = 30303
 reserved_peers = "/home/parity/.local/share/io.parity.ethereum/bootnodes.txt"
+reserved_only = true
 max_peers = 100
 snapshot_peers = 25
 nat = "extip:*INSERT EXTERNAL IP HERE*"