diff --git a/interfaces/connect.ts b/interfaces/connect.ts
index da29877..9a93745 100644
--- a/interfaces/connect.ts
+++ b/interfaces/connect.ts
@@ -462,13 +462,13 @@ export interface Order {
  * This interface defines the parameters required to retrieve historical data.
  *
  * @public
- * @name getHistoricalDataParams
+ * @name GetHistoricalDataParams
  */
-export interface getHistoricalDataParms {
+export interface GetHistoricalDataParams {
     /**
      * @type {string}
      */
-    instrument_token: string;
+    instrument_token: string | number;
     /**
      * @type {string}
      */
@@ -484,11 +484,11 @@ export interface getHistoricalDataParms {
     /**
      * @type {?boolean}
      */
-    continuous?: boolean;
+    continuous?: boolean | number;
     /**
      * @type {?boolean}
      */
-    oi?: boolean;
+    oi?: number | boolean;
 };
 
 /**
diff --git a/lib/connect.ts b/lib/connect.ts
index 399477d..9d48f0e 100644
--- a/lib/connect.ts
+++ b/lib/connect.ts
@@ -5,7 +5,7 @@ import csvParse from 'papaparse';
 import sha256 from 'crypto-js/sha256';
 import qs from 'qs';
 import utils from './utils';
-import { KiteConnectParams, Varieties, GTTStatusTypes, AnyObject, Order, MarginOrder, VirtualContractParam, TransactionTypes, KiteConnectInterface, CancelOrderParams, ExitOrderParams, ModifyGTTParams, ModifyOrderParams, PlaceGTTParams, PlaceMFOrderParams, PlaceOrderParams, ConvertPositionParams, Exchanges } from '../interfaces';
+import { KiteConnectParams, Varieties, GTTStatusTypes, AnyObject, Order, MarginOrder, VirtualContractParam, TransactionTypes, KiteConnectInterface, CancelOrderParams, ExitOrderParams, ModifyGTTParams, ModifyOrderParams, PlaceGTTParams, PlaceMFOrderParams, PlaceOrderParams, ConvertPositionParams, Exchanges, GetHistoricalDataParams } from '../interfaces';
 import { DEFAULTS, ROUTES } from '../constants';
 
 
@@ -697,7 +697,12 @@ export class KiteConnect implements KiteConnectInterface {
      * @param {(number | boolean)} [oi=false]
      * @returns {Promise<any>}
      */
-    getHistoricalData(instrument_token: number | string, interval: string, from_date: string | Date, to_date: string | Date, continuous: number | boolean = false, oi: number | boolean = false) {
+    getHistoricalData(instrument_token: GetHistoricalDataParams['instrument_token'], 
+        interval: GetHistoricalDataParams['interval'], 
+        from_date: GetHistoricalDataParams['from_date'], 
+        to_date: GetHistoricalDataParams['to_date'], 
+        continuous: GetHistoricalDataParams['continuous'] = false, 
+        oi: GetHistoricalDataParams['oi'] = false)  {
         continuous = continuous ? 1 : 0;
         oi = oi ? 1 : 0;
         if (typeof to_date === 'object') to_date = _getDateTimeString(to_date)