diff --git a/.nvmrc b/.nvmrc
index 958b5a36..3f430af8 100644
--- a/.nvmrc
+++ b/.nvmrc
@@ -1 +1 @@
-v14
+v18
diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 00000000..dd449725
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1 @@
+*.md
diff --git a/packages/xrpl/.eslintrc.js b/packages/xrpl/.eslintrc.js
index 8773b266..3d4b2d5e 100644
--- a/packages/xrpl/.eslintrc.js
+++ b/packages/xrpl/.eslintrc.js
@@ -128,6 +128,12 @@ module.exports = {
         '@typescript-eslint/no-explicit-any': 'off',
       },
     },
+    {
+      files: ['src/models/**/*.ts'],
+      rules: {
+        complexity: ['off'],
+      },
+    },
     {
       files: ['.eslintrc.js', 'jest.config.js'],
       rules: {
diff --git a/packages/xrpl/HISTORY.md b/packages/xrpl/HISTORY.md
index e0e291d1..4d9dd675 100644
--- a/packages/xrpl/HISTORY.md
+++ b/packages/xrpl/HISTORY.md
@@ -1,10 +1,12 @@
 # xrpl.js (ripple-lib) Release History
 
 Subscribe to [the **xrpl-announce** mailing list](https://groups.google.com/g/xrpl-announce) for release announcements. We recommend that xrpl.js (ripple-lib) users stay up-to-date with the latest stable release.
+
 ## Unreleased
 
 ## Fixed
 * Fix request model fields related to AMM
+* Fixed `EscrowCancel` and `EscrowFinish` validation
 
 ## 2.11.0 (2023-08-24)
 
diff --git a/packages/xrpl/src/models/transactions/AMMBid.ts b/packages/xrpl/src/models/transactions/AMMBid.ts
index 48965d7d..046aeacc 100644
--- a/packages/xrpl/src/models/transactions/AMMBid.ts
+++ b/packages/xrpl/src/models/transactions/AMMBid.ts
@@ -1,4 +1,3 @@
-/* eslint-disable complexity -- required for validateAMMBid */
 import { ValidationError } from '../../errors'
 import { AuthAccount, Currency, IssuedCurrencyAmount } from '../common'
 
diff --git a/packages/xrpl/src/models/transactions/AMMDeposit.ts b/packages/xrpl/src/models/transactions/AMMDeposit.ts
index 92648fba..1e852048 100644
--- a/packages/xrpl/src/models/transactions/AMMDeposit.ts
+++ b/packages/xrpl/src/models/transactions/AMMDeposit.ts
@@ -1,4 +1,3 @@
-/* eslint-disable complexity -- required for validateAMMDeposit */
 import { ValidationError } from '../../errors'
 import { Amount, Currency, IssuedCurrencyAmount } from '../common'
 
diff --git a/packages/xrpl/src/models/transactions/AMMWithdraw.ts b/packages/xrpl/src/models/transactions/AMMWithdraw.ts
index 77411616..fcce5912 100644
--- a/packages/xrpl/src/models/transactions/AMMWithdraw.ts
+++ b/packages/xrpl/src/models/transactions/AMMWithdraw.ts
@@ -1,4 +1,3 @@
-/* eslint-disable complexity -- required for validateAMMWithdraw */
 import { ValidationError } from '../../errors'
 import { Amount, Currency, IssuedCurrencyAmount } from '../common'
 
diff --git a/packages/xrpl/src/models/transactions/accountSet.ts b/packages/xrpl/src/models/transactions/accountSet.ts
index a3916356..fe812c17 100644
--- a/packages/xrpl/src/models/transactions/accountSet.ts
+++ b/packages/xrpl/src/models/transactions/accountSet.ts
@@ -1,5 +1,3 @@
-/* eslint-disable complexity -- Necessary for validateAccountSet */
-
 import { isValidClassicAddress } from 'ripple-address-codec'
 
 import { ValidationError } from '../../errors'
diff --git a/packages/xrpl/src/models/transactions/checkCash.ts b/packages/xrpl/src/models/transactions/checkCash.ts
index e33afb5c..462f1944 100644
--- a/packages/xrpl/src/models/transactions/checkCash.ts
+++ b/packages/xrpl/src/models/transactions/checkCash.ts
@@ -1,4 +1,3 @@
-/* eslint-disable complexity -- Necessary for validateCheckCash */
 import { ValidationError } from '../../errors'
 import { Amount } from '../common'
 
diff --git a/packages/xrpl/src/models/transactions/checkCreate.ts b/packages/xrpl/src/models/transactions/checkCreate.ts
index 332ad79a..2b2d9c2f 100644
--- a/packages/xrpl/src/models/transactions/checkCreate.ts
+++ b/packages/xrpl/src/models/transactions/checkCreate.ts
@@ -1,4 +1,3 @@
-/* eslint-disable complexity -- Necessary for validateCheckCreate */
 import { ValidationError } from '../../errors'
 import { Amount } from '../common'
 
diff --git a/packages/xrpl/src/models/transactions/common.ts b/packages/xrpl/src/models/transactions/common.ts
index f30e390b..9781e524 100644
--- a/packages/xrpl/src/models/transactions/common.ts
+++ b/packages/xrpl/src/models/transactions/common.ts
@@ -1,5 +1,4 @@
 /* eslint-disable max-lines-per-function -- Necessary for validateBaseTransaction */
-/* eslint-disable complexity -- Necessary for validateBaseTransaction */
 /* eslint-disable max-statements -- Necessary for validateBaseTransaction */
 import { TRANSACTION_TYPES } from 'ripple-binary-codec'
 
diff --git a/packages/xrpl/src/models/transactions/depositPreauth.ts b/packages/xrpl/src/models/transactions/depositPreauth.ts
index 802488e8..eaf186e8 100644
--- a/packages/xrpl/src/models/transactions/depositPreauth.ts
+++ b/packages/xrpl/src/models/transactions/depositPreauth.ts
@@ -1,4 +1,3 @@
-/* eslint-disable complexity -- Necessary for validateDepositPreauth */
 import { ValidationError } from '../../errors'
 
 import { BaseTransaction, validateBaseTransaction } from './common'
diff --git a/packages/xrpl/src/models/transactions/escrowCancel.ts b/packages/xrpl/src/models/transactions/escrowCancel.ts
index 573d504f..6f133888 100644
--- a/packages/xrpl/src/models/transactions/escrowCancel.ts
+++ b/packages/xrpl/src/models/transactions/escrowCancel.ts
@@ -15,7 +15,7 @@ export interface EscrowCancel extends BaseTransaction {
    * Transaction sequence (or Ticket  number) of EscrowCreate transaction that.
    * created the escrow to cancel.
    */
-  OfferSequence: number
+  OfferSequence: number | string
 }
 
 /**
@@ -27,7 +27,7 @@ export interface EscrowCancel extends BaseTransaction {
 export function validateEscrowCancel(tx: Record<string, unknown>): void {
   validateBaseTransaction(tx)
 
-  if (tx.Owner === undefined) {
+  if (tx.Owner == null) {
     throw new ValidationError('EscrowCancel: missing Owner')
   }
 
@@ -35,11 +35,15 @@ export function validateEscrowCancel(tx: Record<string, unknown>): void {
     throw new ValidationError('EscrowCancel: Owner must be a string')
   }
 
-  if (tx.OfferSequence === undefined) {
+  if (tx.OfferSequence == null) {
     throw new ValidationError('EscrowCancel: missing OfferSequence')
   }
 
-  if (typeof tx.OfferSequence !== 'number') {
+  if (
+    (typeof tx.OfferSequence !== 'number' &&
+      typeof tx.OfferSequence !== 'string') ||
+    Number.isNaN(Number(tx.OfferSequence))
+  ) {
     throw new ValidationError('EscrowCancel: OfferSequence must be a number')
   }
 }
diff --git a/packages/xrpl/src/models/transactions/escrowCreate.ts b/packages/xrpl/src/models/transactions/escrowCreate.ts
index aeb2d88b..8493e9cb 100644
--- a/packages/xrpl/src/models/transactions/escrowCreate.ts
+++ b/packages/xrpl/src/models/transactions/escrowCreate.ts
@@ -1,4 +1,3 @@
-/* eslint-disable complexity -- Necessary for validateEscrowCreate */
 import { ValidationError } from '../../errors'
 
 import { BaseTransaction, validateBaseTransaction } from './common'
diff --git a/packages/xrpl/src/models/transactions/escrowFinish.ts b/packages/xrpl/src/models/transactions/escrowFinish.ts
index 7a362018..f5219f55 100644
--- a/packages/xrpl/src/models/transactions/escrowFinish.ts
+++ b/packages/xrpl/src/models/transactions/escrowFinish.ts
@@ -15,7 +15,7 @@ export interface EscrowFinish extends BaseTransaction {
    * Transaction sequence of EscrowCreate transaction that created the held.
    * payment to finish.
    */
-  OfferSequence: number
+  OfferSequence: number | string
   /**
    * Hex value matching the previously-supplied PREIMAGE-SHA-256.
    * crypto-condition of the held payment.
@@ -37,7 +37,7 @@ export interface EscrowFinish extends BaseTransaction {
 export function validateEscrowFinish(tx: Record<string, unknown>): void {
   validateBaseTransaction(tx)
 
-  if (tx.Owner === undefined) {
+  if (tx.Owner == null) {
     throw new ValidationError('EscrowFinish: missing field Owner')
   }
 
@@ -45,11 +45,15 @@ export function validateEscrowFinish(tx: Record<string, unknown>): void {
     throw new ValidationError('EscrowFinish: Owner must be a string')
   }
 
-  if (tx.OfferSequence === undefined) {
+  if (tx.OfferSequence == null) {
     throw new ValidationError('EscrowFinish: missing field OfferSequence')
   }
 
-  if (typeof tx.OfferSequence !== 'number') {
+  if (
+    (typeof tx.OfferSequence !== 'number' &&
+      typeof tx.OfferSequence !== 'string') ||
+    Number.isNaN(Number(tx.OfferSequence))
+  ) {
     throw new ValidationError('EscrowFinish: OfferSequence must be a number')
   }
 
diff --git a/packages/xrpl/src/models/transactions/offerCreate.ts b/packages/xrpl/src/models/transactions/offerCreate.ts
index 07f9d341..782e6354 100644
--- a/packages/xrpl/src/models/transactions/offerCreate.ts
+++ b/packages/xrpl/src/models/transactions/offerCreate.ts
@@ -1,4 +1,3 @@
-/* eslint-disable complexity -- Necessary for validateOfferCreate */
 import { ValidationError } from '../../errors'
 import { Amount } from '../common'
 
diff --git a/packages/xrpl/src/models/transactions/payment.ts b/packages/xrpl/src/models/transactions/payment.ts
index 118e88a5..493afb42 100644
--- a/packages/xrpl/src/models/transactions/payment.ts
+++ b/packages/xrpl/src/models/transactions/payment.ts
@@ -1,4 +1,3 @@
-/* eslint-disable complexity -- Necessary for validatePayment */
 import { ValidationError } from '../../errors'
 import { Amount, Path } from '../common'
 import { isFlagEnabled } from '../utils'
diff --git a/packages/xrpl/src/models/transactions/paymentChannelClaim.ts b/packages/xrpl/src/models/transactions/paymentChannelClaim.ts
index 4aeda9ac..c673f181 100644
--- a/packages/xrpl/src/models/transactions/paymentChannelClaim.ts
+++ b/packages/xrpl/src/models/transactions/paymentChannelClaim.ts
@@ -1,4 +1,3 @@
-/* eslint-disable complexity -- Necessary for validatePaymentChannelClaim */
 import { ValidationError } from '../../errors'
 
 import { BaseTransaction, GlobalFlags, validateBaseTransaction } from './common'
diff --git a/packages/xrpl/src/models/transactions/paymentChannelCreate.ts b/packages/xrpl/src/models/transactions/paymentChannelCreate.ts
index 6bde2c20..4a1b7a04 100644
--- a/packages/xrpl/src/models/transactions/paymentChannelCreate.ts
+++ b/packages/xrpl/src/models/transactions/paymentChannelCreate.ts
@@ -1,4 +1,3 @@
-/* eslint-disable complexity -- Necessary for validatePaymentChannelCreate */
 import { ValidationError } from '../../errors'
 
 import { BaseTransaction, validateBaseTransaction } from './common'
diff --git a/packages/xrpl/src/models/transactions/signerListSet.ts b/packages/xrpl/src/models/transactions/signerListSet.ts
index 0d2cffe2..f264d55b 100644
--- a/packages/xrpl/src/models/transactions/signerListSet.ts
+++ b/packages/xrpl/src/models/transactions/signerListSet.ts
@@ -36,7 +36,6 @@ const HEX_WALLET_LOCATOR_REGEX = /^[0-9A-Fa-f]{64}$/u
  * @param tx - An SignerListSet Transaction.
  * @throws When the SignerListSet is Malformed.
  */
-// eslint-disable-next-line complexity -- validation can be complex
 export function validateSignerListSet(tx: Record<string, unknown>): void {
   validateBaseTransaction(tx)
 
diff --git a/packages/xrpl/src/models/transactions/transaction.ts b/packages/xrpl/src/models/transactions/transaction.ts
index d726e996..6c7fa409 100644
--- a/packages/xrpl/src/models/transactions/transaction.ts
+++ b/packages/xrpl/src/models/transactions/transaction.ts
@@ -1,4 +1,3 @@
-/* eslint-disable complexity -- verifies 19 tx types hence a lot of checks needed */
 /* eslint-disable max-lines-per-function -- need to work with a lot of Tx verifications */
 
 import { ValidationError } from '../../errors'
diff --git a/packages/xrpl/test/models/escrowCancel.test.ts b/packages/xrpl/test/models/escrowCancel.test.ts
index c4650a92..e7eba479 100644
--- a/packages/xrpl/test/models/escrowCancel.test.ts
+++ b/packages/xrpl/test/models/escrowCancel.test.ts
@@ -25,6 +25,13 @@ describe('EscrowCancel', function () {
     assert.doesNotThrow(() => validate(cancel))
   })
 
+  it(`Valid EscrowCancel with string OfferSequence`, function () {
+    cancel.OfferSequence = '7'
+
+    assert.doesNotThrow(() => validateEscrowCancel(cancel))
+    assert.doesNotThrow(() => validate(cancel))
+  })
+
   it(`Invalid EscrowCancel missing owner`, function () {
     delete cancel.Owner
 
@@ -55,7 +62,7 @@ describe('EscrowCancel', function () {
     )
   })
 
-  it(`Invalid OfferSequence`, function () {
+  it(`Invalid Owner`, function () {
     cancel.Owner = 10
 
     assert.throws(
@@ -70,8 +77,8 @@ describe('EscrowCancel', function () {
     )
   })
 
-  it(`Invalid owner`, function () {
-    cancel.OfferSequence = '10'
+  it(`Invalid OfferSequence`, function () {
+    cancel.OfferSequence = 'random'
 
     assert.throws(
       () => validateEscrowCancel(cancel),
diff --git a/packages/xrpl/test/models/escrowFinish.test.ts b/packages/xrpl/test/models/escrowFinish.test.ts
index 4caf04a7..8aa6d0f9 100644
--- a/packages/xrpl/test/models/escrowFinish.test.ts
+++ b/packages/xrpl/test/models/escrowFinish.test.ts
@@ -35,6 +35,13 @@ describe('EscrowFinish', function () {
     assert.doesNotThrow(() => validate(escrow))
   })
 
+  it(`verifies valid EscrowFinish w/string OfferSequence`, function () {
+    escrow.OfferSequence = '7'
+
+    assert.doesNotThrow(() => validateEscrowFinish(escrow))
+    assert.doesNotThrow(() => validate(escrow))
+  })
+
   it(`throws w/ invalid Owner`, function () {
     escrow.Owner = 0x15415253
 
@@ -51,7 +58,7 @@ describe('EscrowFinish', function () {
   })
 
   it(`throws w/ invalid OfferSequence`, function () {
-    escrow.OfferSequence = '10'
+    escrow.OfferSequence = 'random'
 
     assert.throws(
       () => validateEscrowFinish(escrow),