diff --git a/package.json b/package.json
index ce8a1e3..8eb073c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@buckaroo/buckaroo_sdk",
-    "version": "1.3.4",
+    "version": "1.4.0",
     "description": "Buckaroo payment SDK",
     "main": "dist/buckaroo.cjs.js",
     "module": "dist/buckaroo.esm.js",
diff --git a/src/Request/Headers.ts b/src/Request/Headers.ts
index be3f5b7..8467292 100644
--- a/src/Request/Headers.ts
+++ b/src/Request/Headers.ts
@@ -31,7 +31,7 @@ export default class Headers {
     ): this {
         this._headers.Software = JSON.stringify({
             PlatformName: value.platformName || 'Node SDK',
-            PlatformVersion: value.platformVersion || '1.3.4',
+            PlatformVersion: value.platformVersion || '1.4.0',
             ModuleSupplier: value.moduleSupplier || 'Buckaroo',
             ModuleName: value.moduleName || 'BuckarooPayments',
             ModuleVersion: value.moduleVersion || '1.0',
@@ -62,7 +62,7 @@ export default class Headers {
             Channel: 'Web',
             Software: JSON.stringify({
                 PlatformName: 'Node SDK',
-                PlatformVersion: '1.3.4',
+                PlatformVersion: '1.4.0',
                 ModuleSupplier: 'Buckaroo',
                 ModuleName: 'BuckarooPayments',
                 ModuleVersion: '1.0',