diff --git a/web/client-api/src/test/java/io/deephaven/web/client/api/HierarchicalTableTestGwt.java b/web/client-api/src/test/java/io/deephaven/web/client/api/HierarchicalTableTestGwt.java
index 92b724ef5a1..ef176b4a16a 100644
--- a/web/client-api/src/test/java/io/deephaven/web/client/api/HierarchicalTableTestGwt.java
+++ b/web/client-api/src/test/java/io/deephaven/web/client/api/HierarchicalTableTestGwt.java
@@ -75,7 +75,7 @@ public void testRefreshingTreeTable() {
                         // This call effectively asserts that there are 10 rows after expand, so we don't need
                         // to worry about an update from the underlying table racing the expand
                         return waitForEventWhere(treeTable, JsTreeTable.EVENT_UPDATED,
-                                (CustomEvent<JsTreeTable.TreeViewportData> d) -> d.detail.getTreeSize() == 1, 4004);
+                                (CustomEvent<JsTreeTable.TreeViewportData> d) -> d.detail.getTreeSize() == 1, 20004);
                     }).then(event -> {
                         treeTable.close();