diff --git a/sdk/js/CHANGELOG.md b/sdk/js/CHANGELOG.md
index d65685610..bf08c17ce 100644
--- a/sdk/js/CHANGELOG.md
+++ b/sdk/js/CHANGELOG.md
@@ -9,6 +9,8 @@ added chunks and sendAndConfirmTransactionsWithRetry as utility functions.
 
 added integration tests for postVaaSolanaWithRetry.
 
+initial Oasis support
+
 ## 0.1.4
 
 initial AVAX testnet support
diff --git a/sdk/js/src/utils/array.ts b/sdk/js/src/utils/array.ts
index cebf79398..5ec435e6e 100644
--- a/sdk/js/src/utils/array.ts
+++ b/sdk/js/src/utils/array.ts
@@ -7,6 +7,7 @@ import {
   CHAIN_ID_POLYGON,
   CHAIN_ID_ETHEREUM_ROPSTEN,
   CHAIN_ID_AVAX,
+  CHAIN_ID_OASIS,
 } from "./consts";
 import { humanAddress, canonicalAddress, isNativeDenom } from "../terra";
 import { PublicKey } from "@solana/web3.js";
@@ -19,7 +20,8 @@ export const isEVMChain = (chainId: ChainId) => {
     chainId === CHAIN_ID_BSC ||
     chainId === CHAIN_ID_ETHEREUM_ROPSTEN ||
     chainId === CHAIN_ID_AVAX ||
-    chainId === CHAIN_ID_POLYGON
+    chainId === CHAIN_ID_POLYGON ||
+    chainId === CHAIN_ID_OASIS
   );
 };
 
diff --git a/sdk/js/src/utils/consts.ts b/sdk/js/src/utils/consts.ts
index 8e6196c1b..bdd21957e 100644
--- a/sdk/js/src/utils/consts.ts
+++ b/sdk/js/src/utils/consts.ts
@@ -1,10 +1,11 @@
-export type ChainId = 1 | 2 | 3 | 4 | 5 | 6 | 10001;
+export type ChainId = 1 | 2 | 3 | 4 | 5 | 6 | 7 | 10001;
 export const CHAIN_ID_SOLANA: ChainId = 1;
 export const CHAIN_ID_ETH: ChainId = 2;
 export const CHAIN_ID_TERRA: ChainId = 3;
 export const CHAIN_ID_BSC: ChainId = 4;
 export const CHAIN_ID_POLYGON: ChainId = 5;
 export const CHAIN_ID_AVAX: ChainId = 6;
+export const CHAIN_ID_OASIS: ChainId = 7;
 export const CHAIN_ID_ETHEREUM_ROPSTEN: ChainId = 10001;
 
 export const WSOL_ADDRESS = "So11111111111111111111111111111111111111112";