diff --git a/common/network-defaults/src/sandbox.rs b/common/network-defaults/src/sandbox.rs
index b507b103dc..951b1a7f39 100644
--- a/common/network-defaults/src/sandbox.rs
+++ b/common/network-defaults/src/sandbox.rs
@@ -4,7 +4,7 @@
 pub const BECH32_PREFIX: &str = "nymt";
 pub const DENOM: &str = "unymt";
 
-pub const DEFAULT_MIXNET_CONTRACT_ADDRESS: &str = "nymt14hj2tavq8fpesdwxxcu44rty3hh90vhuysqrsr";
+pub const DEFAULT_MIXNET_CONTRACT_ADDRESS: &str = "nymt1ghd753shjuwexxywmgs4xz7x2q732vcnstz02j";
 pub const DEFAULT_VESTING_CONTRACT_ADDRESS: &str = "nymt1nc5tatafv6eyq7llkr2gv50ff9e22mnfp9pc5s";
 pub const BANDWIDTH_CLAIM_CONTRACT_ADDRESS: &str = "nymt17p9rzwnnfxcjp32un9ug7yhhzgtkhvl9f8xzkv";
 pub const REWARDING_VALIDATOR_ADDRESS: &str = "nymt17zujduc46wvkwvp6f062mm5xhr7jc3fewvqu9e";