diff --git a/lib/tuyaopenapi.js b/lib/tuyaopenapi.js
index a5b82f5a..604a0489 100644
--- a/lib/tuyaopenapi.js
+++ b/lib/tuyaopenapi.js
@@ -170,7 +170,7 @@ class TuyaOpenAPI {
       'lang': this.lang,
       'dev_lang': 'javascript',
       'dev_channel': 'homebridge',
-      'devVersion': '1.3.1',
+      'devVersion': '1.4.0',
       
     };
     this.log.log(`TuyaOpenAPI request: method = ${method}, endpoint = ${this.endpoint}, path = ${path}, params = ${JSON.stringify(params)}, body = ${JSON.stringify(body)}, headers = ${JSON.stringify(headers)}`);
diff --git a/lib/tuyashopenapi.js b/lib/tuyashopenapi.js
index cfef83d0..428e6d5b 100644
--- a/lib/tuyashopenapi.js
+++ b/lib/tuyashopenapi.js
@@ -164,7 +164,7 @@ class TuyaSHOpenAPI {
       'lang': this.lang,
       'dev_lang': 'javascript',
       'dev_channel': 'homebridge',
-      'devVersion': '1.3.1',
+      'devVersion': '1.4.0',
 
     };
     this.log.log(`TuyaOpenAPI request: method = ${method}, endpoint = ${this.endpoint}, path = ${path}, params = ${JSON.stringify(params)}, body = ${JSON.stringify(body)}, headers = ${JSON.stringify(headers)}`);
diff --git a/package.json b/package.json
index 070d48b7..742c1a93 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "homebridge-tuya-platform",
-  "version": "1.3.1",
+  "version": "1.4.0",
   "description": "Official Homebridge plugin for Tuya Open API, maintained by the Tuya Developer Team.",
   "main": "index.js",
   "scripts": {