diff --git a/core/src/api/index.ts b/core/src/api/index.ts
index 58b94f38b..be1b06777 100644
--- a/core/src/api/index.ts
+++ b/core/src/api/index.ts
@@ -4,7 +4,6 @@
  */
 export enum AppRoute {
   appDataPath = 'appDataPath',
-  appVersion = 'appVersion',
   openExternalUrl = 'openExternalUrl',
   openAppDirectory = 'openAppDirectory',
   openFileExplore = 'openFileExplorer',
diff --git a/core/src/node/extension/manager.ts b/core/src/node/extension/manager.ts
index 618a5ed9f..3e52ac02d 100644
--- a/core/src/node/extension/manager.ts
+++ b/core/src/node/extension/manager.ts
@@ -47,7 +47,7 @@ export class ExtensionManager {
 
       const extensionsJson = join(extDir, "extensions.json");
       if (!existsSync(extensionsJson))
-        writeFileSync(extensionsJson, "{}", "utf-8");
+        writeFileSync(extensionsJson, "{}");
 
       this.extensionsPath = extDir;
     } catch (error) {
diff --git a/core/src/node/extension/store.ts b/core/src/node/extension/store.ts
index 2225479ca..84b1f9caf 100644
--- a/core/src/node/extension/store.ts
+++ b/core/src/node/extension/store.ts
@@ -84,7 +84,6 @@ export function persistExtensions() {
   writeFileSync(
     ExtensionManager.instance.getExtensionsFile(),
     JSON.stringify(persistData),
-    "utf-8"
   );
 }
 
diff --git a/electron/handlers/app.ts b/electron/handlers/app.ts
index 2cbc13848..d0d9dae72 100644
--- a/electron/handlers/app.ts
+++ b/electron/handlers/app.ts
@@ -7,15 +7,6 @@ import { ExtensionManager, ModuleManager } from '@janhq/core/node'
 import { startServer, stopServer } from '@janhq/server'
 
 export function handleAppIPCs() {
-  /**
-   * Returns the version of the app.
-   * @param _event - The IPC event object.
-   * @returns The version of the app.
-   */
-  ipcMain.handle(AppRoute.appVersion, async (_event) => {
-    return app.getVersion()
-  })
-
   /**
    * Handles the "openAppDirectory" IPC message by opening the app's user data directory.
    * The `shell.openPath` method is used to open the directory in the user's default file explorer.
diff --git a/web/containers/Layout/BottomBar/index.tsx b/web/containers/Layout/BottomBar/index.tsx
index 6fbac8bec..655ca2300 100644
--- a/web/containers/Layout/BottomBar/index.tsx
+++ b/web/containers/Layout/BottomBar/index.tsx
@@ -15,7 +15,6 @@ import { MainViewState } from '@/constants/screens'
 import { useActiveModel } from '@/hooks/useActiveModel'
 
 import { useDownloadState } from '@/hooks/useDownloadState'
-import { useGetAppVersion } from '@/hooks/useGetAppVersion'
 import { useGetDownloadedModels } from '@/hooks/useGetDownloadedModels'
 import useGetSystemResources from '@/hooks/useGetSystemResources'
 import { useMainViewState } from '@/hooks/useMainViewState'
@@ -24,7 +23,6 @@ const BottomBar = () => {
   const { activeModel, stateModel } = useActiveModel()
   const { ram, cpu } = useGetSystemResources()
   const progress = useAtomValue(appDownloadProgress)
-  const appVersion = useGetAppVersion()
   const { downloadedModels } = useGetDownloadedModels()
   const { setMainViewState } = useMainViewState()
   const { downloadStates } = useDownloadState()
@@ -74,9 +72,8 @@ const BottomBar = () => {
       <div className="flex gap-x-2">
         <SystemItem name="CPU:" value={`${cpu}%`} />
         <SystemItem name="Mem:" value={`${ram}%`} />
-        <span className="text-xs font-semibold ">
-          Jan v{appVersion?.version ?? ''}
-        </span>
+        {/* VERSION is defined by webpack, please see next.config.js */}
+        <span className="text-xs font-semibold ">Jan v{VERSION ?? ''}</span>
       </div>
     </div>
   )
diff --git a/web/hooks/useGetAppVersion.ts b/web/hooks/useGetAppVersion.ts
deleted file mode 100644
index ef82add45..000000000
--- a/web/hooks/useGetAppVersion.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-import { useEffect, useState } from 'react'
-
-export function useGetAppVersion() {
-  const [version, setVersion] = useState<string>('')
-
-  useEffect(() => {
-    getAppVersion()
-  }, [])
-
-  const getAppVersion = () => {
-    window.core?.api?.appVersion().then((version: string | undefined) => {
-      setVersion(version ?? '')
-    })
-  }
-
-  return { version }
-}
diff --git a/web/screens/Settings/CoreExtensions/ExtensionsCatalog/index.tsx b/web/screens/Settings/CoreExtensions/ExtensionsCatalog/index.tsx
index e2a6f3e13..650ed318c 100644
--- a/web/screens/Settings/CoreExtensions/ExtensionsCatalog/index.tsx
+++ b/web/screens/Settings/CoreExtensions/ExtensionsCatalog/index.tsx
@@ -7,8 +7,6 @@ import { Button } from '@janhq/uikit'
 
 import { FeatureToggleContext } from '@/context/FeatureToggle'
 
-import { useGetAppVersion } from '@/hooks/useGetAppVersion'
-
 import { formatExtensionsName } from '@/utils/converter'
 
 import { extensionManager } from '@/extension'
@@ -17,7 +15,6 @@ const ExtensionCatalog = () => {
   const [activeExtensions, setActiveExtensions] = useState<any[]>([])
   const [extensionCatalog, setExtensionCatalog] = useState<any[]>([])
   const fileInputRef = useRef<HTMLInputElement | null>(null)
-  const { version } = useGetAppVersion()
   const { experimentalFeatureEnabed } = useContext(FeatureToggleContext)
   /**
    * Loads the extension catalog module from a CDN and sets it as the extension catalog state.
@@ -26,7 +23,6 @@ const ExtensionCatalog = () => {
     if (!window.electronAPI) {
       return
     }
-    if (!version) return
 
     // Get extension manifest
     import(/* webpackIgnore: true */ PLUGIN_CATALOG + `?t=${Date.now()}`).then(
@@ -35,7 +31,7 @@ const ExtensionCatalog = () => {
           setExtensionCatalog(data.default)
       }
     )
-  }, [experimentalFeatureEnabed, version])
+  }, [experimentalFeatureEnabed])
 
   /**
    * Fetches the active extensions and their preferences from the `extensions` and `preferences` modules.
diff --git a/web/services/restService.ts b/web/services/restService.ts
index 6fd7ad069..25488ae15 100644
--- a/web/services/restService.ts
+++ b/web/services/restService.ts
@@ -13,11 +13,6 @@ export function openExternalUrl(url: string) {
   window?.open(url, '_blank')
 }
 
-// Async function to get the application version
-export async function appVersion() {
-  return Promise.resolve(VERSION)
-}
-
 // Define API routes based on different route types
 export const APIRoutes = [
   ...Object.values(AppRoute).map((r) => ({ path: 'app', route: r })),
@@ -55,5 +50,4 @@ export const restAPI = {
     }
   }, {}),
   openExternalUrl,
-  appVersion,
 }