diff --git a/src/util/worker.ts b/src/util/worker.ts
index ff23fee1..28ea12ef 100644
--- a/src/util/worker.ts
+++ b/src/util/worker.ts
@@ -307,6 +307,11 @@ export class PageWorker {
       }
 
       if (!opts.data.ts) {
+        logger.warn(
+          "Page timestamp not found in WARCs, falling back to current time",
+          { ...this.logDetails },
+          "recorder",
+        );
         opts.data.ts = new Date();
       }