diff --git a/lib/a11y-snapshot/__snapshots__/material-ui.test.js.snap b/lib/a11y-snapshot/__snapshots__/material-ui.test.js.snap
index 4fef7a965..b2bdcc405 100644
--- a/lib/a11y-snapshot/__snapshots__/material-ui.test.js.snap
+++ b/lib/a11y-snapshot/__snapshots__/material-ui.test.js.snap
@@ -698,12 +698,14 @@ exports[`chromium /api/button/ 1`] = `
         <text>variant</text>
       </gridcell>
       <gridcell>
-        'contained' | 'outlined' | 'text'
+        'contained' | 'outlined' | 'text' | string
         <text>'contained'</text>
         <LineBreak></LineBreak>
         <text>| 'outlined'</text>
         <LineBreak></LineBreak>
         <text>| 'text'</text>
+        <LineBreak></LineBreak>
+        <text>| string</text>
       </gridcell>
       <gridcell>
         'text'
@@ -16469,7 +16471,7 @@ exports[`chromium /components/tree-view/ 1`] = `
       <SVGRoot></SVGRoot>
     </combobox>
   </toolbar>
-  <heading level="3">
+  <heading level="2">
     Controlled tree view
     <Anchor></Anchor>
     <text>Controlled tree view</text>
@@ -16481,7 +16483,15 @@ exports[`chromium /components/tree-view/ 1`] = `
     A generic container that is programmatically focused to test keyboard
     navigation of our components.
   </button>
-  <tree>
+  <button>
+    EXPAND ALL
+    <text>EXPAND ALL</text>
+  </button>
+  <button>
+    SELECT ALL
+    <text>SELECT ALL</text>
+  </button>
+  <tree multiselectable="true">
     <treeitem level="1">
       Applications
       <SVGRoot></SVGRoot>
@@ -17369,6 +17379,8 @@ exports[`firefox /api/button/ 1`] = `
         <text>| 'outlined'</text>
         <whitespace></whitespace>
         <text>| 'text'</text>
+        <whitespace></whitespace>
+        <text>| string</text>
       </cell>
       <cell>
         <text>'text'</text>
@@ -28940,7 +28952,7 @@ exports[`firefox /components/tree-view/ 1`] = `
     <button>Reset demo</button>
     <buttonmenu haspopup="true">See more</buttonmenu>
   </toolbar>
-  <heading level="3">
+  <heading level="2">
     Controlled tree view
     <link></link>
     <text>Controlled tree view</text>
@@ -28952,7 +28964,15 @@ exports[`firefox /components/tree-view/ 1`] = `
     A generic container that is programmatically focused to test keyboard
     navigation of our components.
   </button>
-  <tree>
+  <button>
+    EXPAND ALL
+    <text>EXPAND ALL</text>
+  </button>
+  <button>
+    SELECT ALL
+    <text>SELECT ALL</text>
+  </button>
+  <tree multiselectable="true">
     <treeitem level="1">
       Applications
       <text>Applications</text>