diff --git a/change/@fluentui-react-conformance-griffel-0e193d59-759e-48f2-a8a2-d0b3fb5bfb55.json b/change/@fluentui-react-conformance-griffel-0e193d59-759e-48f2-a8a2-d0b3fb5bfb55.json
index bc735b460a4d4b..1ad751f2377aa0 100644
--- a/change/@fluentui-react-conformance-griffel-0e193d59-759e-48f2-a8a2-d0b3fb5bfb55.json
+++ b/change/@fluentui-react-conformance-griffel-0e193d59-759e-48f2-a8a2-d0b3fb5bfb55.json
@@ -1,7 +1,7 @@
 {
-  "type": "none",
-  "comment": "Update tsconfig to include Node types in local build now that they're no longer leaked by react-conformance",
+  "type": "prerelease",
+  "comment": "Fix cleanup of overridesWin test",
   "packageName": "@fluentui/react-conformance-griffel",
   "email": "elcraig@microsoft.com",
-  "dependentChangeType": "none"
+  "dependentChangeType": "patch"
 }
diff --git a/packages/react-conformance-griffel/src/overridesWin.ts b/packages/react-conformance-griffel/src/overridesWin.ts
index 0cad8908afee5f..3adc5a6b1f2371 100644
--- a/packages/react-conformance-griffel/src/overridesWin.ts
+++ b/packages/react-conformance-griffel/src/overridesWin.ts
@@ -50,8 +50,10 @@ export const overridesWin: ConformanceTest = (componentInfo, testInfo) => {
     document.body.appendChild(container);
   });
 
-  afterEach(() => {
+  afterEach(async () => {
     if (container) {
+      const ReactDOM = await import('react-dom');
+      ReactDOM.unmountComponentAtNode(container);
       document.body.removeChild(container);
     }