# Updating all events from a third-party calendar provider
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If several events are added to or removed from your source calendar after you have imported its iCalendar `.ics` file, you can reflect those changes in Change Calendar. First, re-export the source calendar, and then import the new file into Change Calendar, which is a tool in Amazon Systems Manager. Events in your change calendar will be updated to reflect the contents of the newer file.

**To update all events from a third-party calendar provider**

1. In your third-party calendar, add or remove events as you want them to be reflected in Change Calendar, and then re-export the calendar to a new `.ics` file.

1. Open the Amazon Systems Manager console at [https://console.amazonaws.cn/systems-manager/](https://console.amazonaws.cn/systems-manager/).

1. In the navigation pane, choose **Change Calendar**.

1. From the list of calendars, choose the calendar name from the list.

1. On the **Actions** menu, choose **Edit**.

1. In the **Import calendar** section, choose **Choose file**.

1. Navigate to and select the replacement `.ics` file.

1. Choose **Save**.