diff --git a/src/components/DataGrid/classNames.ts b/src/components/DataGrid/classNames.ts
index 3e43d2d2..2e1bc5b7 100644
--- a/src/components/DataGrid/classNames.ts
+++ b/src/components/DataGrid/classNames.ts
@@ -1,7 +1,12 @@
 import { gridClasses } from "@mui/x-data-grid";
 
+/**
+ * Class names for `DataGrid` components (src/components/DataGrid/).
+ *
+ * This object includes {@link gridClasses} exported from MUI's `DataGrid` package.
+ */
 export const dataGridClassNames = {
   ...gridClasses,
-  rowIndexEven: "data-grid-row-index-even",
-  rowIndexOdd: "data-grid-row-index-odd",
+  rowIndexEven: "data-grid-row__index-even",
+  rowIndexOdd: "data-grid-row__index-odd",
 };
diff --git a/src/components/DataGrid/index.ts b/src/components/DataGrid/index.ts
index 3eb59911..43a0d496 100644
--- a/src/components/DataGrid/index.ts
+++ b/src/components/DataGrid/index.ts
@@ -1,2 +1,3 @@
 export * from "./DataGrid";
 export * from "./classNames";
+export * from "./helpers";