diff --git a/packages/ts-types/src/cosmos.ts b/packages/ts-types/src/cosmos.ts
index a23d49f86..ef13c78bb 100644
--- a/packages/ts-types/src/cosmos.ts
+++ b/packages/ts-types/src/cosmos.ts
@@ -30,6 +30,7 @@ export enum CosmosChainId {
   Saga = 'ssc-1',
   Neutron = 'neutron-1',
   Fetch = 'fetchhub-4',
+  Mantra = 'mantra-1',
 }
 
 export enum TestnetCosmosChainId {