diff --git a/data-src/appversion b/data-src/appversion
index 513cc0b..e31f654 100644
--- a/data-src/appversion
+++ b/data-src/appversion
@@ -1 +1 @@
-3.0.14
\ No newline at end of file
+4.0.0.beta
\ No newline at end of file
diff --git a/data-src/index.js b/data-src/index.js
index be301b9..0c3b735 100644
--- a/data-src/index.js
+++ b/data-src/index.js
@@ -1220,7 +1220,7 @@ class Security {
 }
 var security = new Security();
 
-// let appVersion = 'v3.0.14'; // Default placeholder
+// let appVersion = 'v4.0.0.beta'; // Default placeholder
 async function getAppVersion() {
     try {
         const response = await fetch('/appversion?v='+Date.now());
@@ -1233,7 +1233,7 @@ async function getAppVersion() {
         // Trigger any UI updates here
     } catch (error) {
         console.error("Error loading App version:", error);
-        appVersion = 'v3.0.14'; // Default placeholder
+        appVersion = 'v4.0.0.beta'; // Default placeholder
     }
     return appVersion;
 }
diff --git a/src/ConfigSettings.h b/src/ConfigSettings.h
index c43dd45..329369c 100644
--- a/src/ConfigSettings.h
+++ b/src/ConfigSettings.h
@@ -5,7 +5,7 @@
 #include "WResp.h"
 
 #ifndef FW_VERSION
-  #define FW_VERSION "v3.0.14" // Fallback if app_version.py script fails
+  #define FW_VERSION "v4.0.0.beta" // Fallback if app_version.py script fails
 #endif
 
 enum class conn_types_t : byte {