diff --git a/rust/main/hyperlane-core/src/chain.rs b/rust/main/hyperlane-core/src/chain.rs
index a4cfaac77c7..134881bf719 100644
--- a/rust/main/hyperlane-core/src/chain.rs
+++ b/rust/main/hyperlane-core/src/chain.rs
@@ -299,6 +299,7 @@ pub enum HyperlaneDomainTechnicalStack {
     OpStack,
     PolygonCDK,
     PolkadotSubstrate,
+    ZkSync,
     #[default]
     Other,
 }
@@ -382,6 +383,7 @@ impl KnownHyperlaneDomain {
             HyperlaneDomainTechnicalStack::PolkadotSubstrate: [
                 Moonbeam, Tangle
             ],
+            HyperlaneDomainTechnicalStack::ZkSync: [],
             HyperlaneDomainTechnicalStack::Other: [
                 Avalanche, BinanceSmartChain, Celo, EclipseMainnet, Endurance, Ethereum,
                 FuseMainnet, Gnosis, Injective, Linea, Lukso, Neutron, Osmosis, Polygon,