diff --git a/autoload/coc/pum.vim b/autoload/coc/pum.vim
index e7384b04300..be0e052edb5 100644
--- a/autoload/coc/pum.vim
+++ b/autoload/coc/pum.vim
@@ -65,7 +65,7 @@ function! coc#pum#close(...) abort
     endif
     call s:close_pum()
     if !get(a:, 2, 0)
-      call coc#rpc#notify('CompleteStop', [kind])
+      call coc#rpc#request('CompleteStop', [kind])
     endif
   endif
   return ''
@@ -115,7 +115,7 @@ function! coc#pum#_insert() abort
     endif
     doautocmd <nomodeline> TextChangedI
     call s:close_pum()
-    call coc#rpc#notify('CompleteStop', [''])
+    call coc#rpc#request('CompleteStop', [''])
   endif
   return ''
 endfunction
diff --git a/src/attach.ts b/src/attach.ts
index cceb75bfd76..3fb11df4aae 100644
--- a/src/attach.ts
+++ b/src/attach.ts
@@ -99,7 +99,11 @@ export default (opts: Attach, requestApi = false): Plugin => {
     timing.start(method)
     try {
       events.requesting = true
-      if (method == 'CocAutocmd') {
+      if (method == 'CompleteStop') {
+        logger.trace('Event: ', method, ...args)
+        await events.fire(method, args)
+        resp.send(undefined)
+      } else if (method == 'CocAutocmd') {
         logger.trace('Request autocmd:', ...args)
         await events.fire(args[0], args.slice(1))
         resp.send(undefined)
diff --git a/src/completion/index.ts b/src/completion/index.ts
index d4af488d578..aee3774fe98 100644
--- a/src/completion/index.ts
+++ b/src/completion/index.ts
@@ -66,8 +66,8 @@ export class Completion implements Disposable {
     events.on('CursorMovedI', () => {
       clearTimeout(this.triggerTimer)
     }, null, this.disposables)
-    events.on('CompleteStop', kind => {
-      this.stop(false, kind)
+    events.on('CompleteStop', async kind => {
+      await this.stopAwaitable(false, kind)
     }, null, this.disposables)
     events.on('InsertEnter', this.onInsertEnter, this, this.disposables)
     events.on('TextChangedI', this.onTextChangedI, this, this.disposables)
@@ -360,6 +360,10 @@ export class Completion implements Disposable {
   }
 
   public stop(close: boolean, kind: CompleteFinishKind = CompleteFinishKind.Normal): void {
+    void this.stopAwaitable(close, kind)
+  }
+
+  public async stopAwaitable(close: boolean, kind: CompleteFinishKind = CompleteFinishKind.Normal): Promise<void> {
     let { complete } = this
     if (complete == null) return
     let inserted = kind === CompleteFinishKind.Confirm || (this.popupEvent?.inserted && kind != CompleteFinishKind.Cancel)
@@ -374,14 +378,16 @@ export class Completion implements Disposable {
     events.completing = false
     this.cancel()
     doc._forceSync()
-    void events.fire('CompleteDone', [toCompleteDoneItem(item, resolved?.item)])
+    const completeDone = events.fire('CompleteDone', [toCompleteDoneItem(item, resolved?.item)])
     if (close) this.nvim.call('coc#pum#_close', [], true)
     if (resolved && inserted) {
       this._mru.add(line.slice(character, inputStart) + input, item)
     }
+    let confirmDone = Promise.resolve()
     if (kind == CompleteFinishKind.Confirm && resolved) {
-      void this.confirmCompletion(resolved.source, resolved.item, option)
+      confirmDone = this.confirmCompletion(resolved.source, resolved.item, option)
     }
+    await Promise.all([completeDone, confirmDone])
   }
 
   private async confirmCompletion(source: ISource, item: CompleteItem, option: CompleteOption): Promise<void> {