diff --git a/packages/react-dom/index.classic.fb.js b/packages/react-dom/index.classic.fb.js
index 18c05a0861d2f..a9efae8208b94 100644
--- a/packages/react-dom/index.classic.fb.js
+++ b/packages/react-dom/index.classic.fb.js
@@ -24,6 +24,7 @@ export {
   hydrateRoot,
   findDOMNode,
   flushSync,
+  hydrate,
   render,
   unmountComponentAtNode,
   unstable_batchedUpdates,