diff --git a/packages/connect-explorer/src/components/Menu.tsx b/packages/connect-explorer/src/components/Menu.tsx
index 3b103ba76e3..49d77f2af41 100644
--- a/packages/connect-explorer/src/components/Menu.tsx
+++ b/packages/connect-explorer/src/components/Menu.tsx
@@ -2,6 +2,7 @@ import React, { useEffect, useState } from 'react';
 import { withRouter } from 'react-router-dom';
 import InfinityMenu from 'react-infinity-menu';
 import { createGlobalStyle } from 'styled-components';
+import { deepClone } from '@trezor/utils';
 
 import config from '../data/menu';
 
@@ -139,7 +140,7 @@ const findFiltered = (url: any, tree: any, node: any, key: any) => {
 
 const getTree = (url: string) => {
     // clone config
-    const tree = JSON.parse(JSON.stringify(config));
+    const tree = deepClone(config);
     const filteredTree = tree.reduce((prev, curr, key) => {
         if (key === undefined) return prev;
         return findFiltered(url, prev, curr, key);
diff --git a/packages/connect-explorer/src/reducers/methodReducer.ts b/packages/connect-explorer/src/reducers/methodReducer.ts
index 9d684a492c9..7e5f6f998cb 100644
--- a/packages/connect-explorer/src/reducers/methodReducer.ts
+++ b/packages/connect-explorer/src/reducers/methodReducer.ts
@@ -1,6 +1,7 @@
 /* eslint-disable no-eval */
 
 import stringifyObject from 'stringify-object';
+import { deepClone } from '@trezor/utils';
 
 import {
     TAB_CHANGE,
@@ -182,7 +183,7 @@ const findField = (state: MethodState, field: any) => {
 
 const onFieldChange = (state: MethodState, _field: any, value: any) => {
     const newState = {
-        ...JSON.parse(JSON.stringify(state)),
+        ...deepClone(state),
         ...state,
     };
     const field = findField(newState, _field);
@@ -206,10 +207,7 @@ const getMethodState = (url: string) => {
     const method = config.find(m => m.url === url);
     if (!method) return initialState;
     // clone object
-    const state = {
-        ...JSON.parse(JSON.stringify(method)),
-        // ...method,
-    };
+    const state = deepClone(method) as MethodState;
 
     // set default values
     state.fields = state.fields.map(f => setAffectedValues(state, prepareBundle(f)));
@@ -219,9 +217,9 @@ const getMethodState = (url: string) => {
 };
 
 const onAddBatch = (state: MethodState, _field: Field<any>, item: any) => {
-    const newState = JSON.parse(JSON.stringify(state));
+    const newState = deepClone(state) as any;
     const field = newState.fields.find(f => f.name === _field.name);
-    field.items = [...field.items, item];
+    field.items = [...field?.items, item];
     prepareBundle(field);
 
     return updateParams(newState);
@@ -231,8 +229,8 @@ const onRemoveBatch = (state: MethodState, _field: any, _batch: any) => {
     const field = state.fields.find(f => f.name === _field.name);
     const items = field?.items?.filter(batch => batch !== _batch);
 
-    const newState = JSON.parse(JSON.stringify(state));
-    const newField = newState.fields.find(f => f.name === field?.name);
+    const newState = deepClone(state);
+    const newField = newState.fields.find(f => f.name === field?.name) as any;
     newField.items = items;
     prepareBundle(newField);
 
diff --git a/packages/connect/src/api/common/paramsValidator.ts b/packages/connect/src/api/common/paramsValidator.ts
index e1f96bd0a01..75419064afe 100644
--- a/packages/connect/src/api/common/paramsValidator.ts
+++ b/packages/connect/src/api/common/paramsValidator.ts
@@ -1,4 +1,5 @@
 // origin: https://github.com/trezor/connect/blob/develop/src/js/core/methods/helpers/paramsValidator.js
+import { deepClone } from '@trezor/utils';
 
 import { ERRORS } from '../../constants';
 import { fromHardened } from '../../utils/pathUtils';
@@ -102,7 +103,7 @@ export const getFirmwareRange = (
     coinInfo: CoinInfo | null | undefined,
     currentRange: FirmwareRange,
 ) => {
-    const current: FirmwareRange = JSON.parse(JSON.stringify(currentRange));
+    const current: FirmwareRange = deepClone(currentRange);
     // set minimum required firmware from coins.json (coinInfo)
     if (coinInfo) {
         if (!coinInfo.support || typeof coinInfo.support.trezor1 !== 'string') {
diff --git a/packages/connect/src/api/customMessage.ts b/packages/connect/src/api/customMessage.ts
index 0597f09e7cd..ccf378342d0 100644
--- a/packages/connect/src/api/customMessage.ts
+++ b/packages/connect/src/api/customMessage.ts
@@ -1,5 +1,6 @@
 // origin: https://github.com/trezor/connect/blob/develop/src/js/core/methods/CustomMessage.js
 
+import { deepClone } from '@trezor/utils';
 import { AbstractMethod } from '../core/AbstractMethod';
 import { validateParams } from './common/paramsValidator';
 import { ERRORS } from '../constants';
@@ -26,7 +27,7 @@ export default class CustomMessage extends AbstractMethod<'customMessage', Param
 
         if (payload.messages) {
             try {
-                JSON.parse(JSON.stringify(payload.messages));
+                deepClone(payload.messages);
             } catch (error) {
                 throw ERRORS.TypedError(
                     'Method_InvalidParameter',
diff --git a/packages/suite/src/actions/suite/metadataActions.ts b/packages/suite/src/actions/suite/metadataActions.ts
index 6e9fc09669b..88608ee44fc 100644
--- a/packages/suite/src/actions/suite/metadataActions.ts
+++ b/packages/suite/src/actions/suite/metadataActions.ts
@@ -1,7 +1,7 @@
 import TrezorConnect from '@trezor/connect';
 import { analytics, EventType } from '@trezor/suite-analytics';
 
-import { createDeferred } from '@trezor/utils';
+import { createDeferred, deepClone } from '@trezor/utils';
 import { METADATA } from '@suite-actions/constants';
 import { Dispatch, GetState } from '@suite-types';
 import {
@@ -518,7 +518,7 @@ export const addAccountMetadata =
         const account = getState().wallet.accounts.find(a => a.key === payload.accountKey);
         if (!account) return false;
         // clone Account.metadata
-        const metadata = JSON.parse(JSON.stringify(account.metadata));
+        const metadata = deepClone(account.metadata);
 
         if (payload.type === 'outputLabel') {
             if (typeof payload.value !== 'string' || payload.value.length === 0) {
diff --git a/packages/suite/src/actions/wallet/formDraftActions.ts b/packages/suite/src/actions/wallet/formDraftActions.ts
index 0cca37e4261..e53c81e18b0 100644
--- a/packages/suite/src/actions/wallet/formDraftActions.ts
+++ b/packages/suite/src/actions/wallet/formDraftActions.ts
@@ -3,6 +3,7 @@ import { getFormDraftKey } from '@suite-common/wallet-utils';
 import { FORM_DRAFT } from './constants';
 
 import type { FormDraftKeyPrefix, FormDraft } from '@wallet-types/form';
+import { deepClone } from '@trezor/utils';
 
 export type FormDraftAction =
     | {
@@ -36,7 +37,7 @@ export const getDraft =
 
         if (draft) {
             // draft is a read-only redux object. make a copy to be able to modify values
-            return JSON.parse(JSON.stringify(draft)) as T;
+            return deepClone(draft) as T;
         }
     };
 
diff --git a/packages/suite/src/actions/wallet/sendFormActions.ts b/packages/suite/src/actions/wallet/sendFormActions.ts
index 69b4451aaeb..23652b92677 100644
--- a/packages/suite/src/actions/wallet/sendFormActions.ts
+++ b/packages/suite/src/actions/wallet/sendFormActions.ts
@@ -84,7 +84,7 @@ export const getDraft = () => (_dispatch: Dispatch, getState: GetState) => {
     const draft = send.drafts[selectedAccount.account.key];
     if (draft) {
         // draft is a read-only redux object. make a copy to be able to modify values
-        return JSON.parse(JSON.stringify(draft));
+        return deepClone(draft);
     }
 };
 
diff --git a/packages/utxo-lib/tests/compose.test.ts b/packages/utxo-lib/tests/compose.test.ts
index a8dd9c071ed..9ce8908cbb7 100644
--- a/packages/utxo-lib/tests/compose.test.ts
+++ b/packages/utxo-lib/tests/compose.test.ts
@@ -1,3 +1,4 @@
+import { deepClone } from '@trezor/utils';
 import { composeTx } from '../src';
 import * as utils from '../src/compose/utils';
 import { Permutation } from '../src/compose/permutation';
@@ -26,7 +27,7 @@ describe('composeTx', () => {
                     delete input.REV_hash;
                 });
                 const o = result.transaction.PERM_outputs;
-                const sorted = JSON.parse(JSON.stringify(o.sorted));
+                const sorted = deepClone(o.sorted);
                 sorted.forEach((ss: any) => {
                     const s = ss;
                     if (s.opReturnData != null) {