diff --git a/block.go b/block.go
index 18222bd2b..2351908fc 100644
--- a/block.go
+++ b/block.go
@@ -39,6 +39,7 @@ type BlockAction struct {
 	Type                  ActionType          `json:"type"`
 	Text                  TextBlockObject     `json:"text"`
 	Value                 string              `json:"value"`
+	Files                 []File              `json:"files"`
 	ActionTs              string              `json:"action_ts"`
 	SelectedOption        OptionBlockObject   `json:"selected_option"`
 	SelectedOptions       []OptionBlockObject `json:"selected_options"`