diff --git a/testnet/mixnode_config.yaml b/testnet/mixnode_config.yaml
index a98c9a34..c013dba7 100644
--- a/testnet/mixnode_config.yaml
+++ b/testnet/mixnode_config.yaml
@@ -1,10 +1,10 @@
 mixnode:
   # A listen address for other mixnodes in the mixnet and mixclients who want to send packets.
-  listen_address: 127.0.0.1:7777
+  listen_address: 0.0.0.0:7777
   # A (internal) listen address only for a "single" mixclient who wants to receive packets
   # from the last mixnet layer.
   # For more details, see the documentation in the "mixnet" crate.
-  client_listen_address: 127.0.0.1:7778
+  client_listen_address: 0.0.0.0:7778
   # A ed25519 private key for decrypting inbound Sphinx packets
   # received from mixclients or mixnodes in the previous mixnet layer.
   private_key: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]