diff --git a/will/backends/io_adapters/slack.py b/will/backends/io_adapters/slack.py
index 6c808bb0..7b8be976 100644
--- a/will/backends/io_adapters/slack.py
+++ b/will/backends/io_adapters/slack.py
@@ -303,6 +303,11 @@ def send_message(self, event):
                         }
                     ]),
                 })
+            elif "attachments" in event.kwargs:
+                data.update({
+                    "text": event.content,
+                    "attachments": json.dumps(event.kwargs["attachments"])
+                })
             else:
                 data.update({
                     "text": event.content,