diff --git a/engine/common/api_helpers/paginators.py b/engine/common/api_helpers/paginators.py
index 34a20c27..1e1a2028 100644
--- a/engine/common/api_helpers/paginators.py
+++ b/engine/common/api_helpers/paginators.py
@@ -82,4 +82,4 @@ class FifteenPageSizePaginator(PathPrefixedPagePagination):
 
 class TwentyFiveCursorPaginator(PathPrefixedCursorPagination):
     page_size = 25
-    ordering = "-pk"
+    ordering = "-started_at"