diff --git a/package.json b/package.json
index bbea73e8b..4c721a127 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "39.1.1",
+  "version": "40.1.1",
   "license": "MIT",
   "sideEffects": false,
   "main": "dist/cjs/index.js",
diff --git a/src/client.ts b/src/client.ts
index 388776c89..98efb2a68 100644
--- a/src/client.ts
+++ b/src/client.ts
@@ -68,7 +68,7 @@ import {
 import { HttpClient } from './clientAdapter';
 
 /** Current SDK version */
-export const SDK_VERSION = '39.1.1';
+export const SDK_VERSION = '40.1.1';
 export class Client implements ClientInterface {
   private _config: Readonly<Configuration>;
   private _timeout: number;
@@ -140,7 +140,7 @@ export class Client implements ClientInterface {
     };
 
     this._userAgent = updateUserAgent(
-      'Square-TypeScript-SDK/39.1.1 ({api-version}) {engine}/{engine-version} ({os-info}) {detail}',
+      'Square-TypeScript-SDK/40.1.1 ({api-version}) {engine}/{engine-version} ({os-info}) {detail}',
       this._config.squareVersion,
       this._config.userAgentDetail
     );