diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9747c0f..2c29c74 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,9 @@
 # Changelog
 All changes to this project will be documented in this file.
 
+## [2.6.5] - 2024-10-17
+- Fix postinstall script
+
 ## [2.6.4] - 2024-10-08
 - Add transcript feature
 
diff --git a/package.json b/package.json
index e45b583..b3ff0e4 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@api.video/nodejs-client",
-  "version": "2.6.4",
+  "version": "2.6.5",
   "description": "api.video nodejs API client",
    "keywords": [
     "api.video",
@@ -34,7 +34,7 @@
     "test": "jest",
     "eslint": "eslint 'src/**/*.ts' 'test/**/*.ts'",
     "prettier": "prettier --ignore-path .gitignore --write \"**/*.ts\" && npx eslint src/ test/ --fix",
-    "postinstall": "if [ ! -d \"lib\" ]; then npm run build; fi"
+    "postinstall": "node -e \"const { execSync } = require('child_process'); const { existsSync } = require('fs'); if (!existsSync('lib')) execSync('npm run build', { stdio: 'inherit' });\""
   },
   "dependencies": {
     "axios": "^1.4.0",
diff --git a/src/HttpClient.ts b/src/HttpClient.ts
index d60ad71..0fba0fa 100644
--- a/src/HttpClient.ts
+++ b/src/HttpClient.ts
@@ -59,7 +59,7 @@ export default class HttpClient {
     this.chunkSize = params.chunkSize;
     this.headers = new AxiosHeaders({
       Accept: 'application/json, */*;q=0.8',
-      'AV-Origin-Client': 'nodejs:2.6.4',
+      'AV-Origin-Client': 'nodejs:2.6.5',
       Authorization: this.apiKey ? `Basic ${encode(`${this.apiKey}:`)}` : '',
       ...(params.applicationName && params.applicationVersion
         ? {