diff --git a/superset/reports/notifications/slack.py b/superset/reports/notifications/slack.py
index b70cab4435..9ecf8de6d5 100644
--- a/superset/reports/notifications/slack.py
+++ b/superset/reports/notifications/slack.py
@@ -184,7 +184,7 @@ Error: %(text)s
             # files_upload returns SlackResponse as we run it in sync mode.
             if files:
                 for file in files:
-                    client.files_upload(
+                    client.files_upload_v2(
                         channels=channel,
                         file=file,
                         initial_comment=body,
diff --git a/tests/integration_tests/reports/commands_tests.py b/tests/integration_tests/reports/commands_tests.py
index 30d1834852..e57912759a 100644
--- a/tests/integration_tests/reports/commands_tests.py
+++ b/tests/integration_tests/reports/commands_tests.py
@@ -1098,7 +1098,7 @@ def test_email_dashboard_report_schedule_force_screenshot(
 @pytest.mark.usefixtures(
     "load_birth_names_dashboard_with_slices", "create_report_slack_chart"
 )
-@patch("superset.utils.slack.WebClient.files_upload")
+@patch("superset.utils.slack.WebClient.files_upload_v2")
 @patch("superset.utils.screenshots.ChartScreenshot.get_screenshot")
 def test_slack_chart_report_schedule(
     screenshot_mock,
@@ -1186,7 +1186,7 @@ def test_slack_chart_report_schedule_with_errors(
 @pytest.mark.usefixtures(
     "load_birth_names_dashboard_with_slices", "create_report_slack_chart_with_csv"
 )
-@patch("superset.utils.slack.WebClient.files_upload")
+@patch("superset.utils.slack.WebClient.files_upload_v2")
 @patch("superset.utils.csv.urllib.request.urlopen")
 @patch("superset.utils.csv.urllib.request.OpenerDirector.open")
 @patch("superset.utils.csv.get_chart_csv_data")
@@ -1353,7 +1353,7 @@ def test_report_schedule_success_grace(create_alert_slack_chart_success):
 
 
 @pytest.mark.usefixtures("create_alert_slack_chart_grace")
-@patch("superset.utils.slack.WebClient.files_upload")
+@patch("superset.utils.slack.WebClient.files_upload_v2")
 @patch("superset.utils.screenshots.ChartScreenshot.get_screenshot")
 def test_report_schedule_success_grace_end(
     screenshot_mock, file_upload_mock, create_alert_slack_chart_grace