diff --git a/modules/sdk-core/src/bitgo/staking/iStakingWallet.ts b/modules/sdk-core/src/bitgo/staking/iStakingWallet.ts
index ed34a2ab33..339b19dddb 100644
--- a/modules/sdk-core/src/bitgo/staking/iStakingWallet.ts
+++ b/modules/sdk-core/src/bitgo/staking/iStakingWallet.ts
@@ -105,6 +105,16 @@ export interface StakeOptions {
    * pox-contract name (valid values are pox-3 and pox-4)
    */
   contractName?: 'pox-3' | 'pox-4';
+
+  /**
+   * btc staking expire time
+   */
+  expireAt?: number;
+
+  /**
+   * btc staking reward address
+   */
+  rewardAddress?: string;
 }
 
 export interface UnstakeOptions {