diff --git a/docs/pages/base-ui/api/checkbox-group-label.json b/docs/pages/base-ui/api/checkbox-group-label.json
index a2d2e1cc14..89cbe96181 100644
--- a/docs/pages/base-ui/api/checkbox-group-label.json
+++ b/docs/pages/base-ui/api/checkbox-group-label.json
@@ -8,7 +8,10 @@
     "import * as CheckboxGroup from '@base_ui/react/CheckboxGroup';\nconst CheckboxGroupLabel = CheckboxGroup.Label;"
   ],
   "classes": [],
+  "spread": true,
+  "themeDefaultProps": true,
   "muiName": "CheckboxGroupLabel",
+  "forwardsRefTo": "HTMLSpanElement",
   "filename": "/packages/mui-base/src/CheckboxGroup/Label/CheckboxGroupLabel.tsx",
   "inheritance": null,
   "demos": "<ul><li><a href=\"/base-ui/react-checkbox-group/\">Checkbox Group</a></li></ul>",
diff --git a/docs/pages/base-ui/api/checkbox-group-root.json b/docs/pages/base-ui/api/checkbox-group-root.json
index a68794fe53..d4b1208de0 100644
--- a/docs/pages/base-ui/api/checkbox-group-root.json
+++ b/docs/pages/base-ui/api/checkbox-group-root.json
@@ -8,7 +8,10 @@
     "import * as CheckboxGroup from '@base_ui/react/CheckboxGroup';\nconst CheckboxGroupRoot = CheckboxGroup.Root;"
   ],
   "classes": [],
+  "spread": true,
+  "themeDefaultProps": true,
   "muiName": "CheckboxGroupRoot",
+  "forwardsRefTo": "HTMLDivElement",
   "filename": "/packages/mui-base/src/CheckboxGroup/Root/CheckboxGroupRoot.tsx",
   "inheritance": null,
   "demos": "<ul><li><a href=\"/base-ui/react-checkbox-group/\">Checkbox Group</a></li></ul>",
diff --git a/packages/mui-base/src/CheckboxGroup/Label/CheckboxGroupLabel.test.tsx b/packages/mui-base/src/CheckboxGroup/Label/CheckboxGroupLabel.test.tsx
new file mode 100644
index 0000000000..76afbcd604
--- /dev/null
+++ b/packages/mui-base/src/CheckboxGroup/Label/CheckboxGroupLabel.test.tsx
@@ -0,0 +1,14 @@
+import * as React from 'react';
+import { createRenderer } from '@mui/internal-test-utils';
+import * as CheckboxGroup from '@base_ui/react/CheckboxGroup';
+import { describeConformance } from '../../../test/describeConformance';
+
+describe('<CheckboxGroup.Label />', () => {
+  const { render } = createRenderer();
+
+  describeConformance(<CheckboxGroup.Label />, () => ({
+    inheritComponent: 'span',
+    refInstanceof: window.HTMLSpanElement,
+    render,
+  }));
+});
diff --git a/packages/mui-base/src/CheckboxGroup/Root/CheckboxGroupRoot.test.tsx b/packages/mui-base/src/CheckboxGroup/Root/CheckboxGroupRoot.test.tsx
new file mode 100644
index 0000000000..317eae91ef
--- /dev/null
+++ b/packages/mui-base/src/CheckboxGroup/Root/CheckboxGroupRoot.test.tsx
@@ -0,0 +1,14 @@
+import * as React from 'react';
+import { createRenderer } from '@mui/internal-test-utils';
+import * as CheckboxGroup from '@base_ui/react/CheckboxGroup';
+import { describeConformance } from '../../../test/describeConformance';
+
+describe('<CheckboxGroup.Root />', () => {
+  const { render } = createRenderer();
+
+  describeConformance(<CheckboxGroup.Root />, () => ({
+    inheritComponent: 'div',
+    refInstanceof: window.HTMLDivElement,
+    render,
+  }));
+});