diff --git a/CHANGELOG.md b/CHANGELOG.md
index f2900911..a4b355ad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,12 @@
 <!-- This file is generated, please add to it using `knope document-change` in the client-library-templates repo -->
 # Changelog
 
+## 10.9.0 (2026-10-05)
+
+### Features
+
+- Fixed postal_code and country_code fields on Scheme Identifiers to correctly allow null values.
+
 ## 10.8.0 (2026-10-02)
 
 ### Features
diff --git a/package-lock.json b/package-lock.json
index 0e435fa8..318eba5e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "gocardless-nodejs",
-  "version": "10.8.0",
+  "version": "10.9.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "gocardless-nodejs",
-      "version": "10.8.0",
+      "version": "10.9.0",
       "license": "MIT",
       "dependencies": {
         "got": "^11.8.6",
diff --git a/package.json b/package.json
index 4c62385e..86fa9523 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gocardless-nodejs",
-  "version": "10.8.0",
+  "version": "10.9.0",
   "description": "Node.js client for the GoCardless API - a powerful, simple solution for the collection of recurring bank-to-bank payments",
   "author": "GoCardless Ltd <client-libraries@gocardless.com>",
   "repository": {
diff --git a/src/constants.ts b/src/constants.ts
index 8a0e98d3..656bf2c7 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -3,7 +3,7 @@ enum Environments {
   Sandbox = 'SANDBOX',
 }
 
-const CLIENT_VERSION = '10.8.0';
+const CLIENT_VERSION = '10.9.0';
 const API_VERSION = '2015-07-06';
 
 export { Environments, CLIENT_VERSION, API_VERSION };