diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 18575356..efdbd230 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -111,7 +111,7 @@ jobs:
       - uses: technote-space/workflow-conclusion-action@v2
       - name: Post to a Slack channel
         id: slack
-        uses: slackapi/slack-github-action@v1.17.0
+        uses: slackapi/slack-github-action@v1.23.0
         with:
           # Slack channel id, channel name, or user id to post message.
           # See also: https://api.slack.com/methods/chat.postMessage#channels