diff --git a/ts/sdk/README.md b/ts/sdk/README.md
index b70dd559..829c5f00 100644
--- a/ts/sdk/README.md
+++ b/ts/sdk/README.md
@@ -32,7 +32,7 @@ import {
   BluefinRequestSigner,
   makeSigner,
 } from "@bluefin-exchange/pro-sdk";
-import { SuiJsonRpcClient } from "@mysten/sui/jsonRpc";
+import { SuiGrpcClient } from "@mysten/sui/grpc";
 import { Ed25519Keypair } from "@mysten/sui/keypairs/ed25519";
 import { hexToBytes } from "@noble/hashes/utils.js";
 
@@ -51,13 +51,17 @@ const signer = new BluefinRequestSigner(makeSigner(wallet, false));
 const client = new BluefinProSdk(
   signer,
   "mainnet", // or "testnet" for staging, "devnet" for development
-  new SuiJsonRpcClient({ url: "https://fullnode.mainnet.sui.io:443", network: "mainnet" })
+  new SuiGrpcClient({ network: "mainnet", baseUrl: "https://fullnode.mainnet.sui.io:443" })
 );
 
 // Initialize the SDK (authenticates and loads exchange configuration)
 await client.initialize();
 ```
 
+> The SDK accepts any `@mysten/sui` client implementing the Core API. Use
+> `SuiGrpcClient` — Sui's JSON-RPC interface is deprecated. If you are upgrading from
+> `SuiJsonRpcClient`, swapping the client is the only change required.
+
 ### 2. Get Market Data
 
 ```typescript
diff --git a/ts/sdk/docs/batch-claim-rewards-guide.md b/ts/sdk/docs/batch-claim-rewards-guide.md
index e2b2e58d..a33c167a 100644
--- a/ts/sdk/docs/batch-claim-rewards-guide.md
+++ b/ts/sdk/docs/batch-claim-rewards-guide.md
@@ -21,7 +21,7 @@ import {
   makeSigner,
   BatchClaimParams 
 } from "@bluefin-exchange/pro-sdk";
-import { SuiJsonRpcClient } from "@mysten/sui/jsonRpc";
+import { SuiGrpcClient } from "@mysten/sui/grpc";
 import { Ed25519Keypair } from "@mysten/sui/keypairs/ed25519";
 
 // Create wallet from private key or mnemonic
@@ -34,7 +34,7 @@ const signer = new BluefinRequestSigner(makeSigner(wallet, false));
 const sdk = new BluefinProSdk(
   signer,
   "mainnet", // or "testnet" for staging
-  new SuiJsonRpcClient({ url: "https://fullnode.mainnet.sui.io:443", network: "mainnet" })
+  new SuiGrpcClient({ network: "mainnet", baseUrl: "https://fullnode.mainnet.sui.io:443" })
 );
 
 await sdk.initialize();
@@ -130,7 +130,7 @@ import {
   makeSigner,
   BatchClaimParams 
 } from "@bluefin-exchange/pro-sdk";
-import { SuiJsonRpcClient } from "@mysten/sui/jsonRpc";
+import { SuiGrpcClient } from "@mysten/sui/grpc";
 import { Ed25519Keypair } from "@mysten/sui/keypairs/ed25519";
 import { hexToBytes } from "@noble/hashes/utils.js";
 
@@ -141,7 +141,7 @@ async function claimRewards() {
   const sdk = new BluefinProSdk(
     signer,
     "mainnet",
-    new SuiJsonRpcClient({ url: "https://fullnode.mainnet.sui.io:443", network: "mainnet" })
+    new SuiGrpcClient({ network: "mainnet", baseUrl: "https://fullnode.mainnet.sui.io:443" })
   );
   await sdk.initialize();
 
diff --git a/ts/sdk/example.ts b/ts/sdk/example.ts
index 630e763e..dbaeb13d 100644
--- a/ts/sdk/example.ts
+++ b/ts/sdk/example.ts
@@ -22,7 +22,7 @@ import {
 } from "./index.js";
 
 import { hexToBytes } from "@noble/hashes/utils.js";
-import { SuiJsonRpcClient } from "@mysten/sui/jsonRpc";
+import { SuiGrpcClient } from "@mysten/sui/grpc";
 import { Ed25519Keypair } from "@mysten/sui/keypairs/ed25519";
 
 // Configure logging
@@ -114,7 +114,7 @@ async function main() {
   const client = new BluefinProSdk(
     bfSigner,
     "testnet",
-    new SuiJsonRpcClient({ url: "https://fullnode.testnet.sui.io:443", network: "testnet" })
+    new SuiGrpcClient({ network: "testnet", baseUrl: "https://fullnode.testnet.sui.io:443" })
   );
   await client.initialize();
 
@@ -123,7 +123,7 @@ async function main() {
   // const clientWithTimeOffset = new BluefinProSdk(
   //   bfSigner,
   //   "testnet",
-  //   new SuiJsonRpcClient({ url: "https://fullnode.testnet.sui.io:443", network: "testnet" }),
+  //   new SuiGrpcClient({ network: "testnet", baseUrl: "https://fullnode.testnet.sui.io:443" }),
   //   { currentTimeMs: customTime }
   // );
   // await clientWithTimeOffset.initialize();
diff --git a/ts/sdk/src/request-signer.ts b/ts/sdk/src/request-signer.ts
index 4c33289e..532d63ab 100644
--- a/ts/sdk/src/request-signer.ts
+++ b/ts/sdk/src/request-signer.ts
@@ -6,9 +6,9 @@ import {
 } from '@mysten/sui/cryptography';
 import type {
   DryRunTransactionBlockResponse,
-  SuiClient,
   SuiTransactionBlockResponse,
 } from '@firefly-exchange/library-sui';
+import type { ClientWithCoreApi } from '@mysten/sui/client';
 import type { Transaction as TransactionBlock } from '@mysten/sui/transactions';
 import {
   LoginRequest,
@@ -47,17 +47,17 @@ export interface IBluefinSigner extends ISigner {
   signLoginRequest: (request: LoginRequest) => Promise<string>;
   signTx: (
     txb: TransactionBlock,
-    suiClient: SuiClient,
+    suiClient: ClientWithCoreApi,
   ) => Promise<SignatureWithBytes>;
   executeSponsoredTx: (
     txBytes: string,
     userSignature: string,
     sponsorSignature: string,
-    suiClient: SuiClient,
+    suiClient: ClientWithCoreApi,
   ) => Promise<DryRunTransactionBlockResponse | SuiTransactionBlockResponse>;
   executeTx: (
     txb: TransactionBlock,
-    suiClient: SuiClient,
+    suiClient: ClientWithCoreApi,
   ) => Promise<DryRunTransactionBlockResponse | SuiTransactionBlockResponse>;
 }
 
@@ -402,7 +402,7 @@ export class BluefinRequestSigner implements IBluefinSigner {
     return signedMessageSerialized.signature;
   }
 
-  async signTx(txb: TransactionBlock, suiClient: SuiClient) {
+  async signTx(txb: TransactionBlock, suiClient: ClientWithCoreApi) {
     const SuiBlocks = await loadSuiBlocks();
     return await SuiBlocks.buildAndSignTxBlock(
       txb,
@@ -416,7 +416,7 @@ export class BluefinRequestSigner implements IBluefinSigner {
     txBytes: string,
     userSignature: string,
     sponsorSignature: string,
-    suiClient: SuiClient,
+    suiClient: ClientWithCoreApi,
   ) {
     const SuiBlocks = await loadSuiBlocks();
     return SuiBlocks.executeSponsoredTxBlock(
@@ -427,7 +427,7 @@ export class BluefinRequestSigner implements IBluefinSigner {
     );
   }
 
-  async executeTx(txb: TransactionBlock, suiClient: SuiClient) {
+  async executeTx(txb: TransactionBlock, suiClient: ClientWithCoreApi) {
     const SuiBlocks = await loadSuiBlocks();
     return SuiBlocks.execCall(
       txb,
diff --git a/ts/sdk/src/sdk.ts b/ts/sdk/src/sdk.ts
index a836f806..65ab2b76 100644
--- a/ts/sdk/src/sdk.ts
+++ b/ts/sdk/src/sdk.ts
@@ -902,7 +902,7 @@ export class BluefinProSdk {
     const { RewardsDistributorInteractor } =
       await loadRewardsDistributorInteractor();
     const interactor = new RewardsDistributorInteractor(
-      this.suiClient as any,
+      this.suiClient,
       data as any,
       signer,
       this.bfSigner.isUIWallet(),