diff --git a/packages/trace-viewer/src/ui/timeline.css b/packages/trace-viewer/src/ui/timeline.css
index 179a63e1c3..cece4eb853 100644
--- a/packages/trace-viewer/src/ui/timeline.css
+++ b/packages/trace-viewer/src/ui/timeline.css
@@ -23,6 +23,8 @@
   cursor: text;
   user-select: none;
   margin-left: 10px;
+  max-height: 200px;
+  overflow-y: scroll;
 }
 
 .timeline-divider {