diff --git a/ui/src/lib/inbox.test.ts b/ui/src/lib/inbox.test.ts
index af7c1d35..242997c5 100644
--- a/ui/src/lib/inbox.test.ts
+++ b/ui/src/lib/inbox.test.ts
@@ -113,6 +113,7 @@ function makeRun(id: string, status: HeartbeatRun["status"], createdAt: string,
     externalRunId: null,
     processPid: null,
     processStartedAt: null,
+    lastOutputAt: null,
     retryOfRunId: null,
     processLossRetryCount: 0,
     stdoutExcerpt: null,