diff --git a/README.ja.md b/README.ja.md
index 5b1be6f..ebb75a9 100644
--- a/README.ja.md
+++ b/README.ja.md
@@ -71,15 +71,4 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
         if: env.WORKFLOW_CONCLUSION == 'failure' # 失敗を通知する場合
-```
-
-### Success
-![Success](https://raw.githubusercontent.com/step-security/workflow-conclusion-action/images/success.png)
-
-すべてのジョブが正常だったため、Slackアクションはスキップされます。
-
-### Failure
-![Failure](https://raw.githubusercontent.com/step-security/workflow-conclusion-action/images/failure.png)
-
-いくつかのジョブがスキップされた場合でもSlackアクションは実行されます。
-
+```
\ No newline at end of file
diff --git a/README.md b/README.md
index e982777..ff23530 100644
--- a/README.md
+++ b/README.md
@@ -71,14 +71,4 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
         if: env.WORKFLOW_CONCLUSION == 'failure' # notify only if failure
-```
-
-### Success
-![Success](https://raw.githubusercontent.com/step-security/workflow-conclusion-action/images/success.png)
-
-Slack action step is skipped because all jobs are success.
-
-### Failure
-![Failure](https://raw.githubusercontent.com/step-security/workflow-conclusion-action/images/failure.png)
-
-Slack action step has been executed even if some jobs were skipped.
\ No newline at end of file
+```
\ No newline at end of file