diff --git a/functions/api/inactivity/new.ts b/functions/api/inactivity/new.ts
index baf5ccc..bfe7607 100644
--- a/functions/api/inactivity/new.ts
+++ b/functions/api/inactivity/new.ts
@@ -57,6 +57,7 @@ export async function onRequestPost(context: RequestContext) {
     Date.now().toString();
 
   await context.env.DATA.put(`inactivity_${inactivityId}`, JSON.stringify({
+    created_at: Date.now(),
     departments,
     end,
     reason,