diff --git a/packages/myst-directives/src/aside.ts b/packages/myst-directives/src/aside.ts
index 275306cba..4a04e0030 100644
--- a/packages/myst-directives/src/aside.ts
+++ b/packages/myst-directives/src/aside.ts
@@ -28,7 +28,7 @@ export const asideDirective: DirectiveSpec = {
       children: data.body as (FlowContent | ListContent | PhrasingContent)[],
       class: data.options?.class as string | undefined,
       label,
-      identifier
+      identifier,
     };
     return [aside];
   },