diff --git a/src/types/actions/block-action.ts b/src/types/actions/block-action.ts
index 4e56b23fc..511cb67d1 100644
--- a/src/types/actions/block-action.ts
+++ b/src/types/actions/block-action.ts
@@ -20,7 +20,8 @@ export type BlockElementAction =
   | MultiExternalSelectAction
   | OverflowAction
   | DatepickerAction
-  | RadioButtonsAction;
+  | RadioButtonsAction
+  | CheckboxesAction;
 
 /**
  * Any action from Slack's interactive elements
@@ -185,6 +186,15 @@ export interface RadioButtonsAction extends BasicElementAction<'radio_buttons'>
   confirm?: Confirmation;
 }
 
+/**
+ * An action from a checkboxes element
+ */
+export interface CheckboxesAction extends BasicElementAction<'checkboxes'> {
+  selected_options: Option[];
+  initial_options?: Option[];
+  confirm?: Confirmation;
+}
+
 /**
  * A Slack Block Kit element action wrapped in the standard metadata.
  *