diff --git a/docs/src/electron-how-to/preload-script.md b/docs/src/electron-how-to/preload-script.md
index fa48b59..edb1c39 100644
--- a/docs/src/electron-how-to/preload-script.md
+++ b/docs/src/electron-how-to/preload-script.md
@@ -16,7 +16,6 @@ When sending events from renderer to main, you access the `window.mainApi` objec
 Here are the supported functions for mainApi:
 
 - `send`: Send an event to main.
-- `sendSync`: Send an event to main. It can be used when receiving a return value. The UI may be frozen until the operation is complete.
 - `on`: A listener to receive events sent by main.
 - `once`: A listener to receive events sent by main. (Handle only one call)
 - `off`: Remove an event listener
diff --git a/src/preload/index.ts b/src/preload/index.ts
index a2be50d..ffd8905 100644
--- a/src/preload/index.ts
+++ b/src/preload/index.ts
@@ -12,13 +12,6 @@ contextBridge.exposeInMainWorld('mainApi', {
       throw new Error(`Unknown ipc channel name: ${channel}`)
     }
   },
-  sendSync: (channel: string, ...data: any[]): any => {
-    if (mainAvailChannels.includes(channel)) {
-      return ipcRenderer.sendSync.apply(null, [channel, ...data])
-    }
-
-    throw new Error(`Unknown ipc channel name: ${channel}`)
-  },
   on: (channel: string, listener: (event: IpcRendererEvent, ...args: any[]) => void): void => {
     if (rendererAvailChannels.includes(channel)) {
       ipcRenderer.on(channel, listener)
diff --git a/src/renderer/screens/MainScreen.vue b/src/renderer/screens/MainScreen.vue
index 110b907..52e99fe 100644
--- a/src/renderer/screens/MainScreen.vue
+++ b/src/renderer/screens/MainScreen.vue
@@ -21,7 +21,7 @@ onMounted((): void => {
 })
 
 const getApplicationVersionFromMainProcess = (): void => {
-  appVersion.value = window.mainApi.sendSync('msgRequestGetVersion')
+  window.mainApi.invoke('msgRequestGetVersion').then((result: string) => appVersion.value = result)
 }
 
 const handleChangeTheme = (): void => {