diff --git a/package.json b/package.json
index 1a1776c..3fa55ea 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@utxos/sdk",
-  "version": "0.0.77",
+  "version": "0.0.78",
   "description": "UTXOS SDK - Web3 infrastructure platform for UTXO blockchains",
   "main": "./dist/index.cjs",
   "browser": "./dist/index.js",
@@ -41,7 +41,7 @@
     "typescript": "^5.3.3"
   },
   "dependencies": {
-    "@buildonspark/spark-sdk": "^0.4.2",
+    "@buildonspark/spark-sdk": "0.5.0",
     "@meshsdk/bitcoin": "1.9.0-beta.89",
     "@meshsdk/common": "1.9.0-beta.89",
     "@meshsdk/core-cst": "1.9.0-beta.89",
diff --git a/src/chains/spark/wallet.ts b/src/chains/spark/wallet.ts
index 5a3e801..854e378 100644
--- a/src/chains/spark/wallet.ts
+++ b/src/chains/spark/wallet.ts
@@ -1,5 +1,11 @@
 import axios, { AxiosInstance } from "axios";
-import { openWindow, AddressSummary, OpenWindowResult, ApiError } from "../../";
+import {
+  openWindow,
+  AddressSummary,
+  OpenWindowResult,
+  ApiError,
+  ExitSpeed,
+} from "../../";
 
 export type ValidSparkNetwork = "MAINNET" | "REGTEST";
 
@@ -214,6 +220,50 @@ export class Web3SparkWallet {
     };
   }
 
+  public async withdrawToBitcoin({
+    exitSpeed,
+    amountSats,
+    deductFeeFromWithdrawalAmount,
+    withdrawalAddress,
+  }: {
+    exitSpeed: ExitSpeed;
+    amountSats: number;
+    deductFeeFromWithdrawalAmount: boolean;
+    withdrawalAddress: string;
+  }) {
+    const res: OpenWindowResult = await openWindow(
+      {
+        method: "spark-withdraw-to-bitcoin",
+        exitSpeed,
+        withdrawalAddress,
+        amountSats: String(amountSats),
+        deductFeeFromWithdrawalAmount:
+          deductFeeFromWithdrawalAmount === true ? "true" : "false",
+        projectId: this.projectId,
+        networkId: String(this.networkId),
+      },
+      this.appUrl,
+    );
+
+    if (res.success === false) {
+      throw new ApiError({
+        code: 3,
+        info: "UserDeclined - User declined the transfer.",
+      });
+    }
+
+    if (res.data.method !== "spark-withdraw-to-bitcoin") {
+      throw new ApiError({
+        code: 2,
+        info: "Recieved the wrong response from wallet popover.",
+      });
+    }
+
+    return {
+      withdrawalId: res.data.withdrawalId,
+    };
+  }
+
   public async signMessage({ message }: { message: string }) {
     const res: OpenWindowResult = await openWindow(
       {
diff --git a/src/types/spark/index.ts b/src/types/spark/index.ts
index c8859a3..4746aa7 100644
--- a/src/types/spark/index.ts
+++ b/src/types/spark/index.ts
@@ -220,3 +220,5 @@ declare enum TransferType {
   COUNTER_SWAP = 40,
   UNRECOGNIZED = -1,
 }
+
+export type ExitSpeed = "FAST" | "MEDIUM" | "SLOW";
diff --git a/src/types/window/open-window-params.ts b/src/types/window/open-window-params.ts
index ea89d57..2d5dce2 100644
--- a/src/types/window/open-window-params.ts
+++ b/src/types/window/open-window-params.ts
@@ -1,4 +1,5 @@
 import { Web3AuthProvider } from "../core";
+import { ExitSpeed } from "../spark";
 
 /** in this schema you will see string versions of undefined & boolean, this type is exclusively used for converting into URLSearchParams (where undefined & booleans don't exist) */
 export type OpenWindowParams =
@@ -100,6 +101,15 @@ export type OpenWindowParams =
       networkId: string;
       txId: string;
     }
+  | {
+      method: "spark-withdraw-to-bitcoin";
+      projectId: string;
+      networkId: string;
+      exitSpeed: ExitSpeed;
+      amountSats: string;
+      deductFeeFromWithdrawalAmount: "true" | "false";
+      withdrawalAddress: string;
+    }
   /** to be deprecated */
   | {
       method: "sign-tx";
diff --git a/src/types/window/open-window-result.ts b/src/types/window/open-window-result.ts
index d6b267b..e694bf3 100644
--- a/src/types/window/open-window-result.ts
+++ b/src/types/window/open-window-result.ts
@@ -72,6 +72,10 @@ export type OpenWindowResult =
             method: "spark-claim-static-deposit";
             transferId: string;
           }
+        | {
+            method: "spark-withdraw-to-bitcoin";
+            withdrawalId: string;
+          }
         /** to be deprecated */
         | {
             method: "sign-data";