diff --git a/.changelog/2048.trivial.md b/.changelog/2048.trivial.md
new file mode 100644
index 0000000000..88815efa5a
--- /dev/null
+++ b/.changelog/2048.trivial.md
@@ -0,0 +1 @@
+Remove base64-arraybuffer
diff --git a/package.json b/package.json
index 86270cfe3f..7d07f47647 100644
--- a/package.json
+++ b/package.json
@@ -73,7 +73,6 @@
     "@oasisprotocol/ionic-ledger-hw-transport-ble": "6.0.0",
     "@oasisprotocol/ledger": "1.0.0",
     "@reduxjs/toolkit": "1.9.7",
-    "base64-arraybuffer": "1.0.2",
     "bignumber.js": "9.1.2",
     "bip39": "3.1.0",
     "body-scroll-lock": "4.0.0-beta.0",
diff --git a/src/app/lib/helpers.ts b/src/app/lib/helpers.ts
index ad50cce27c..46c81c1955 100644
--- a/src/app/lib/helpers.ts
+++ b/src/app/lib/helpers.ts
@@ -1,13 +1,12 @@
-import { quantity, staking, types } from '@oasisprotocol/client'
-import { decode as base64decode, encode as base64encode } from 'base64-arraybuffer'
+import { misc, quantity, staking, types } from '@oasisprotocol/client'
 import BigNumber from 'bignumber.js'
 import { StringifiedBigInt } from 'types/StringifiedBigInt'
 import { consensusDecimals, type ParaTimeConfig } from '../../config'
 
 export const uint2hex = (uint: Uint8Array) => Buffer.from(uint).toString('hex')
 export const hex2uint = (hex: string) => new Uint8Array(Buffer.from(hex, 'hex'))
-export const base64ToUint = (value: string) => new Uint8Array(base64decode(value))
-export const uintToBase64 = (value: Uint8Array) => base64encode(value)
+export const base64ToUint = (value: string) => misc.fromBase64(value)
+export const uintToBase64 = (value: Uint8Array) => misc.toBase64(value)
 
 export const shortPublicKey = async (publicKey: Uint8Array) => {
   return await staking.addressFromPublicKey(publicKey)
diff --git a/yarn.lock b/yarn.lock
index 5adc2aabe7..c4a816b83b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3945,11 +3945,6 @@ base-x@^3.0.8:
   dependencies:
     safe-buffer "^5.0.1"
 
-base64-arraybuffer@1.0.2:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/base64-arraybuffer/-/base64-arraybuffer-1.0.2.tgz#1c37589a7c4b0746e34bd1feb951da2df01c1bdc"
-  integrity sha512-I3yl4r9QB5ZRY3XuJVEPfc2XhZO6YweFPI+UovAzn+8/hb3oJ6lnysaFcjVpkCPfVWFUDvoZ8kmVDP7WyRtYtQ==
-
 base64-js@^1.3.1, base64-js@^1.5.1:
   version "1.5.1"
   resolved "https://registry.npmjs.org/base64-js/-/base64-js-1.5.1.tgz"