diff --git a/package.json b/package.json
index ce25b6993..1998a6ee8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@interlay/polkabtc",
-  "version": "0.14.2",
+  "version": "0.14.3",
   "description": "JavaScript library to interact with PolkaBTC",
   "main": "build/index.js",
   "typings": "build/index.d.ts",
@@ -47,13 +47,10 @@
     "regtest-client": "^0.2.0",
     "sinon": "^9.0.3",
     "ts-mock-imports": "^1.3.0",
-    "@polkadot/api": "3.11.1",
-    "@polkadot/typegen": "3.11.1",
+    "@polkadot/api": "4.8.1",
+    "@polkadot/typegen": "4.8.1",
     "bitcoin-core": "^3.0.0"
   },
-  "peerDependencies": {
-    "@polkadot/api": "3.11.1"
-  },
   "devDependencies": {
     "@types/chai": "^4.2.12",
     "@types/chai-as-promised": "^7.1.3",
diff --git a/src/polkabtc-api.ts b/src/polkabtc-api.ts
index 873423a62..bc00827ea 100644
--- a/src/polkabtc-api.ts
+++ b/src/polkabtc-api.ts
@@ -21,7 +21,7 @@ import { Network, networks } from "bitcoinjs-lib";
 export * from "./factory";
 export * from "./parachain/transaction";
 
-function getBitcoinNetwork(network: string = "mainnet"): Network {
+export function getBitcoinNetwork(network: string = "mainnet"): Network {
     switch (network) {
     case "mainnet":
         return networks.bitcoin;
diff --git a/src/utils/bitcoin-core-client.ts b/src/utils/bitcoin-core-client.ts
index d5980f8cb..268ec7165 100644
--- a/src/utils/bitcoin-core-client.ts
+++ b/src/utils/bitcoin-core-client.ts
@@ -66,8 +66,6 @@ export class BitcoinCoreClient {
             throw new Error("Client needs to be initialized before usage");
         }
 
-        const paidOutput: { [key: string]: string } = {};
-        paidOutput[recipient] = amount.toString();
         const raw = await this.client.command(
             "createrawtransaction",
             [],
diff --git a/src/utils/issue.ts b/src/utils/issue.ts
index 54959c459..5af62a2fc 100644
--- a/src/utils/issue.ts
+++ b/src/utils/issue.ts
@@ -1,9 +1,8 @@
 import { ApiPromise } from "@polkadot/api";
 import { KeyringPair } from "@polkadot/keyring/types";
-import * as bitcoinjs from "bitcoinjs-lib";
 import Big from "big.js";
 
-import { btcToSat, satToBTC, IssueRequestExt } from "..";
+import { btcToSat, satToBTC, IssueRequestExt, getBitcoinNetwork } from "..";
 import { ElectrsAPI } from "../external/electrs";
 import { DefaultCollateralAPI } from "../parachain/collateral";
 import { IssueRequestResult, DefaultIssueAPI } from "../parachain/issue";
@@ -26,10 +25,12 @@ export async function issue(
     amount: Big,
     vaultAddress?: string,
     autoExecute = true,
-    triggerRefund = false
+    triggerRefund = false,
+    network = "regtest",
 ): Promise<IssueResult> {
     const treasuryAPI = new DefaultTreasuryAPI(api);
-    const issueAPI = new DefaultIssueAPI(api, bitcoinjs.networks.regtest, electrsAPI);
+    const bitcoinjsNetwork = getBitcoinNetwork(network);
+    const issueAPI = new DefaultIssueAPI(api, bitcoinjsNetwork, electrsAPI);
     const collateralAPI = new DefaultCollateralAPI(api);
 
     issueAPI.setAccount(issuingAccount);
diff --git a/test/integration/parachain/release/redeem.test.ts b/test/integration/parachain/release/redeem.test.ts
index 36326e2ac..bd7d274b8 100644
--- a/test/integration/parachain/release/redeem.test.ts
+++ b/test/integration/parachain/release/redeem.test.ts
@@ -21,12 +21,10 @@ describe("redeem", () => {
     let keyring: Keyring;
     // alice is the root account
     let alice: KeyringPair;
-    let ferdie: KeyringPair;
 
     before(async () => {
         api = await createPolkadotAPI(defaultParachainEndpoint);
         keyring = new Keyring({ type: "sr25519" });
-        ferdie = keyring.addFromUri("//Ferdie");
         alice = keyring.addFromUri("//Alice");
         electrsAPI = new DefaultElectrsAPI("http://0.0.0.0:3002");
     });
@@ -50,7 +48,7 @@ describe("redeem", () => {
                 "rpcuser",
                 "rpcpassword",
                 "18443",
-                vaultToLiquidate.address
+                "Bob"
             );
 
             // Steal some bitcoin (spend from the vault's account)
@@ -61,7 +59,7 @@ describe("redeem", () => {
             await DefaultTransactionAPI.waitForEvent(api, api.events.stakedRelayers.VaultTheft, 17 * 60000);
 
             // Burn PolkaBTC for a premium, to restore peg
-            redeemAPI.setAccount(ferdie);
+            redeemAPI.setAccount(alice);
             await redeemAPI.burn(amount);
             
             // it takes about 15 mins for the theft to be reported