diff --git a/package.json b/package.json
index 808dce77..d9272e2b 100644
--- a/package.json
+++ b/package.json
@@ -231,7 +231,7 @@
     "@babel/core": "7.22.5",
     "@babel/preset-react": "7.22.5",
     "@babel/preset-typescript": "7.22.5",
-    "@btckit/types": "0.0.18",
+    "@btckit/types": "0.0.19",
     "@emotion/babel-plugin": "11.11.0",
     "@emotion/babel-preset-css-prop": "11.11.0",
     "@emotion/cache": "11.11.0",
diff --git a/src/app/common/psbt/use-psbt-request-params.ts b/src/app/common/psbt/use-psbt-request-params.ts
index fcab3f0d..d702404a 100644
--- a/src/app/common/psbt/use-psbt-request-params.ts
+++ b/src/app/common/psbt/use-psbt-request-params.ts
@@ -1,8 +1,7 @@
 import { useMemo } from 'react';
 import { useSearchParams } from 'react-router-dom';
 
-import * as btc from '@scure/btc-signer';
-
+import { AllowedSighashTypes } from '@shared/rpc/methods/sign-psbt';
 import { ensureArray, undefinedIfLengthZero } from '@shared/utils';
 
 import { useRejectIfLedgerWallet } from '@app/common/rpc-helpers';
@@ -23,7 +22,7 @@ export function usePsbtRequestSearchParams() {
     () => ({
       appName: payload?.appDetails?.name,
       allowedSighash: payload?.allowedSighash
-        ? undefinedIfLengthZero(payload.allowedSighash.map(h => Number(h)) as btc.SignatureHash[])
+        ? undefinedIfLengthZero(payload.allowedSighash.map(h => Number(h)) as AllowedSighashTypes[])
         : undefined,
       origin,
       payload,
@@ -54,7 +53,7 @@ export function useRpcSignPsbtParams() {
       requestId,
       psbtHex,
       allowedSighash: undefinedIfLengthZero(
-        allowedSighash.map(h => Number(h)) as btc.SignatureHash[]
+        allowedSighash.map(h => Number(h)) as AllowedSighashTypes[]
       ),
       signAtIndex: undefinedIfLengthZero(ensureArray(signAtIndex).map(h => Number(h))),
     };
diff --git a/src/app/features/psbt-signer/components/psbt-request-details/psbt-request-details.tsx b/src/app/features/psbt-signer/components/psbt-request-details/psbt-request-details.tsx
index 46b2e868..641eea82 100644
--- a/src/app/features/psbt-signer/components/psbt-request-details/psbt-request-details.tsx
+++ b/src/app/features/psbt-signer/components/psbt-request-details/psbt-request-details.tsx
@@ -1,5 +1,7 @@
 import * as btc from '@scure/btc-signer';
 
+import { AllowedSighashTypes } from '@shared/rpc/methods/sign-psbt';
+
 import { useCurrentAccountNativeSegwitIndexZeroSigner } from '@app/store/accounts/blockchain/bitcoin/native-segwit-account.hooks';
 import { useCurrentAccountTaprootIndexZeroSigner } from '@app/store/accounts/blockchain/bitcoin/taproot-account.hooks';
 
@@ -14,7 +16,7 @@ import { PsbtRequestFee } from './components/psbt-request-fee';
 import { PsbtRequestRaw } from './components/psbt-request-raw';
 
 interface PsbtRequestDetailsProps {
-  allowedSighash?: btc.SignatureHash[];
+  allowedSighash?: AllowedSighashTypes[];
   indexesToSign?: number[];
   psbtRaw?: RawPsbt;
   psbtTxInputs: btc.TransactionInput[];
diff --git a/src/app/features/psbt-signer/hooks/use-parsed-inputs.tsx b/src/app/features/psbt-signer/hooks/use-parsed-inputs.tsx
index 74bfcd4b..46c37ed2 100644
--- a/src/app/features/psbt-signer/hooks/use-parsed-inputs.tsx
+++ b/src/app/features/psbt-signer/hooks/use-parsed-inputs.tsx
@@ -8,6 +8,7 @@ import {
   getBtcSignerLibNetworkConfigByMode,
 } from '@shared/crypto/bitcoin/bitcoin.network';
 import { getAddressFromOutScript } from '@shared/crypto/bitcoin/bitcoin.utils';
+import { AllowedSighashTypes } from '@shared/rpc/methods/sign-psbt';
 import { ensureArray, isDefined, isUndefined } from '@shared/utils';
 
 import { useOrdinalsAwareUtxoQueries } from '@app/query/bitcoin/ordinals/ordinals-aware-utxo.query';
@@ -44,7 +45,7 @@ function getInputValue(index: number, input: btc.TransactionInput) {
 }
 
 interface UseParsedInputsArgs {
-  allowedSighash?: btc.SignatureHash[];
+  allowedSighash?: AllowedSighashTypes[];
   inputs: btc.TransactionInput[];
   indexesToSign?: number[];
 }
diff --git a/src/app/features/psbt-signer/hooks/use-parsed-psbt.tsx b/src/app/features/psbt-signer/hooks/use-parsed-psbt.tsx
index 4f2859dd..7a54a743 100644
--- a/src/app/features/psbt-signer/hooks/use-parsed-psbt.tsx
+++ b/src/app/features/psbt-signer/hooks/use-parsed-psbt.tsx
@@ -2,6 +2,8 @@ import { useCallback } from 'react';
 
 import * as btc from '@scure/btc-signer';
 
+import { AllowedSighashTypes } from '@shared/rpc/methods/sign-psbt';
+
 import { subtractMoney } from '@app/common/money/calculate-money';
 import { useCurrentAccountNativeSegwitIndexZeroSigner } from '@app/store/accounts/blockchain/bitcoin/native-segwit-account.hooks';
 import { useCurrentAccountTaprootIndexZeroSigner } from '@app/store/accounts/blockchain/bitcoin/taproot-account.hooks';
@@ -13,7 +15,7 @@ import { usePsbtInscriptions } from './use-psbt-inscriptions';
 import { usePsbtTotals } from './use-psbt-totals';
 
 interface UseParsedPsbtArgs {
-  allowedSighash?: btc.SignatureHash[];
+  allowedSighash?: AllowedSighashTypes[];
   inputs: btc.TransactionInput[];
   indexesToSign?: number[];
   outputs: btc.TransactionOutput[];
diff --git a/src/app/features/psbt-signer/hooks/use-psbt-signer.tsx b/src/app/features/psbt-signer/hooks/use-psbt-signer.tsx
index 813697fb..f1c5cb28 100644
--- a/src/app/features/psbt-signer/hooks/use-psbt-signer.tsx
+++ b/src/app/features/psbt-signer/hooks/use-psbt-signer.tsx
@@ -4,6 +4,7 @@ import { hexToBytes } from '@noble/hashes/utils';
 import * as btc from '@scure/btc-signer';
 
 import { logger } from '@shared/logger';
+import { AllowedSighashTypes } from '@shared/rpc/methods/sign-psbt';
 import { isString, isUndefined } from '@shared/utils';
 
 import { useCurrentAccountNativeSegwitSigner } from '@app/store/accounts/blockchain/bitcoin/native-segwit-account.hooks';
@@ -12,7 +13,7 @@ import { useCurrentAccountTaprootSigner } from '@app/store/accounts/blockchain/b
 export type RawPsbt = ReturnType<typeof btc.RawPSBTV0.decode>;
 
 interface SignPsbtArgs {
-  allowedSighash?: btc.SignatureHash[];
+  allowedSighash?: AllowedSighashTypes[];
   inputs: btc.TransactionInput[];
   indexesToSign?: number[];
   tx: btc.Transaction;
diff --git a/src/app/features/psbt-signer/psbt-signer.tsx b/src/app/features/psbt-signer/psbt-signer.tsx
index 00d05ef0..a8f3bd54 100644
--- a/src/app/features/psbt-signer/psbt-signer.tsx
+++ b/src/app/features/psbt-signer/psbt-signer.tsx
@@ -4,6 +4,7 @@ import { useNavigate } from 'react-router-dom';
 import * as btc from '@scure/btc-signer';
 
 import { RouteUrls } from '@shared/route-urls';
+import { AllowedSighashTypes } from '@shared/rpc/methods/sign-psbt';
 
 import { useRouteHeader } from '@app/common/hooks/use-route-header';
 import { PopupHeader } from '@app/features/current-account/popup-header';
@@ -36,7 +37,7 @@ function getPsbtTxOutputs(psbtTx: btc.Transaction) {
 }
 
 interface PsbtSignerProps {
-  allowedSighash?: btc.SignatureHash[];
+  allowedSighash?: AllowedSighashTypes[];
   indexesToSign?: number[];
   name?: string;
   origin: string;
diff --git a/src/app/store/accounts/blockchain/bitcoin/bitcoin-signer.ts b/src/app/store/accounts/blockchain/bitcoin/bitcoin-signer.ts
index e17e8d31..1c53d3dc 100644
--- a/src/app/store/accounts/blockchain/bitcoin/bitcoin-signer.ts
+++ b/src/app/store/accounts/blockchain/bitcoin/bitcoin-signer.ts
@@ -11,6 +11,7 @@ import {
 } from '@shared/crypto/bitcoin/bitcoin.utils';
 import { getTaprootAddressIndexDerivationPath } from '@shared/crypto/bitcoin/p2tr-address-gen';
 import { getNativeSegwitAddressIndexDerivationPath } from '@shared/crypto/bitcoin/p2wpkh-address-gen';
+import { AllowedSighashTypes } from '@shared/rpc/methods/sign-psbt';
 
 interface Signer<Payment> {
   network: BitcoinNetworkModes;
@@ -20,7 +21,7 @@ interface Signer<Payment> {
   address: string;
   publicKey: Uint8Array;
   sign(tx: btc.Transaction): void;
-  signIndex(tx: btc.Transaction, index: number, allowedSighash?: btc.SignatureHash[]): void;
+  signIndex(tx: btc.Transaction, index: number, allowedSighash?: AllowedSighashTypes[]): void;
 }
 
 interface MakeBitcoinSignerArgs {
@@ -29,7 +30,7 @@ interface MakeBitcoinSignerArgs {
   derivationPath: string;
   paymentFn(keychain: HDKey, network: BitcoinNetworkModes): any;
   signFn(tx: btc.Transaction): void;
-  signAtIndexFn(tx: btc.Transaction, index: number, allowedSighash?: btc.SignatureHash[]): void;
+  signAtIndexFn(tx: btc.Transaction, index: number, allowedSighash?: AllowedSighashTypes[]): void;
 }
 function makeBitcoinSigner<T extends MakeBitcoinSignerArgs>(args: T) {
   const { derivationPath, keychain, network, paymentFn, signFn, signAtIndexFn } = args;
@@ -89,7 +90,8 @@ export function bitcoinAddressIndexSignerFactory<T extends BitcoinAddressIndexSi
 
         tx.sign(addressIndexKeychain.privateKey);
       },
-      signAtIndexFn(tx: btc.Transaction, index: number, allowedSighash?: btc.SignatureHash[]) {
+      // TODO: Revisit allowedSighash type if/when fixed in btc-signer
+      signAtIndexFn(tx: btc.Transaction, index: number, allowedSighash?: number[]) {
         if (!addressIndexKeychain.privateKey)
           throw new Error('Unable to sign transaction, no private key found');
 
diff --git a/src/shared/rpc/methods/accept-bitcoin-contract.ts b/src/shared/rpc/methods/accept-bitcoin-contract.ts
index 04849778..5a3f588a 100644
--- a/src/shared/rpc/methods/accept-bitcoin-contract.ts
+++ b/src/shared/rpc/methods/accept-bitcoin-contract.ts
@@ -1,14 +1,14 @@
 import { DefineRpcMethod, RpcRequest, RpcResponse } from '@btckit/types';
-import { AllowAdditionaProperties } from '@btckit/types/dist/types/utils';
+import { AllowAdditionalProperties } from '@btckit/types/dist/types/utils';
 
-interface BitcoinContractResponseParams extends AllowAdditionaProperties {
+interface BitcoinContractResponseParams extends AllowAdditionalProperties {
   bitcoinContractOffer: string;
   counterpartyWalletURL: string;
   counterpartyWalletName: string;
   counterpartyWalletIcon: string;
 }
 
-interface BitcoinContractResponseBody extends AllowAdditionaProperties {
+interface BitcoinContractResponseBody extends AllowAdditionalProperties {
   contractId: string;
   action: string;
   txId?: string;
diff --git a/src/shared/rpc/methods/sign-psbt.ts b/src/shared/rpc/methods/sign-psbt.ts
index 3e9321dd..19d340d6 100644
--- a/src/shared/rpc/methods/sign-psbt.ts
+++ b/src/shared/rpc/methods/sign-psbt.ts
@@ -1,4 +1,5 @@
-import { DefineRpcMethod, RpcRequest, RpcResponse } from '@btckit/types';
+import { DefineRpcMethod, RpcRequest, RpcResponse, SignatureHash } from '@btckit/types';
+import * as btc from '@scure/btc-signer';
 import * as yup from 'yup';
 
 import { WalletDefaultNetworkConfigurationIds } from '@shared/constants';
@@ -11,11 +12,21 @@ import {
   validateRpcParams,
 } from './validation.utils';
 
-const sigHashTypes = [0x01, 0x02, 0x03, 0x80, 0x81, 0x82, 0x83];
+// TODO: Revisit allowedSighash type if/when fixed in btc-signer
+export type AllowedSighashTypes = SignatureHash | btc.SignatureHash;
 
 const rpcSignPsbtParamsSchema = yup.object().shape({
   account: accountSchema,
-  allowedSighash: yup.array().of(yup.mixed().oneOf(Object.values(sigHashTypes))),
+  allowedSighash: yup
+    .array()
+    .of(
+      yup
+        .mixed()
+        .oneOf([
+          ...Object.values(SignatureHash).filter(Number.isInteger),
+          ...Object.values(btc.SignatureHash).filter(Number.isInteger),
+        ])
+    ),
   hex: yup.string().required(),
   network: yup.string().oneOf(Object.values(WalletDefaultNetworkConfigurationIds)),
   signAtIndex: yup.mixed<number | number[]>().test(testIsNumberOrArrayOfNumbers),
diff --git a/yarn.lock b/yarn.lock
index e6904587..2b069b87 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -926,10 +926,10 @@
     sha.js "^2.4.11"
     smart-buffer "^4.1.0"
 
-"@btckit/types@0.0.18":
-  version "0.0.18"
-  resolved "https://registry.yarnpkg.com/@btckit/types/-/types-0.0.18.tgz#48bd0b564a9c14bf0c670b0834131e5054c20d69"
-  integrity sha512-2b/Ny4rZ+TbGW59xiV/PvXRP1cnF40874t12OzeVKa/BghxBFazEayDHce9YtPTkxQ4ilQkmeNrS67FWK4OsGA==
+"@btckit/types@0.0.19":
+  version "0.0.19"
+  resolved "https://registry.yarnpkg.com/@btckit/types/-/types-0.0.19.tgz#8454326b669d3b029094d3d20026fdc6e6c72319"
+  integrity sha512-APoOfYSg9SRR4CMXL606IDtpgh+ZD3kS/+iY0BkUALD6HvXo2pVw20L5YYIc+HrgMcF6WN0TH7TXdVs+Vu+kww==
 
 "@coinbase/cbpay-js@1.0.2":
   version "1.0.2"