diff --git a/docs/tabs.md b/docs/tabs.md
index 66668a0..8f7da1b 100644
--- a/docs/tabs.md
+++ b/docs/tabs.md
@@ -186,6 +186,24 @@ Ending paragraph
 
 ::::::
 
+Tab set, within tab set:
+
+::::::{tab-set}
+:::::{tab-item} Label 1
+::::{tab-set}
+:::{tab-item} Label 1a
+Content 1a
+:::
+:::{tab-item} Label 1b
+Content 1b
+:::
+::::
+:::::
+:::::{tab-item} Label 2
+Content 2
+:::::
+::::::
+
 ## `tab-set` options
 
 class
diff --git a/sphinx_design/dropdown.py b/sphinx_design/dropdown.py
index c5acf4c..c702474 100644
--- a/sphinx_design/dropdown.py
+++ b/sphinx_design/dropdown.py
@@ -148,7 +148,7 @@ class DropdownHtmlTransform(SphinxPostTransform):
     def run(self):
         """Run the transform"""
         document: nodes.document = self.document
-        for node in document.traverse(lambda node: is_component(node, "dropdown")):
+        for node in findall(document)(lambda node: is_component(node, "dropdown")):
 
             # TODO option to not have card css (but requires more formatting)
             use_card = True
diff --git a/sphinx_design/tabs.py b/sphinx_design/tabs.py
index d280eef..a114170 100644
--- a/sphinx_design/tabs.py
+++ b/sphinx_design/tabs.py
@@ -7,6 +7,7 @@
 from sphinx.util.docutils import SphinxDirective
 from sphinx.util.logging import getLogger
 
+from ._compat import findall
 from .shared import WARNING_TYPE, create_component, is_component
 
 LOGGER = getLogger(__name__)
@@ -216,7 +217,7 @@ def run(self) -> None:
         tab_item_id_base = "sd-tab-item-"
         tab_item_id_num = 0
 
-        for tab_set in self.document.traverse(
+        for tab_set in findall(self.document)(
             lambda node: is_component(node, "tab-set")
         ):
             tab_set_identity = tab_set_id_base + str(tab_set_id_num)