diff --git a/apps/docs/__tests__/VersionSelect_.test.res b/apps/docs/__tests__/VersionSelect_.test.res
index 54943bdae..14b989876 100644
--- a/apps/docs/__tests__/VersionSelect_.test.res
+++ b/apps/docs/__tests__/VersionSelect_.test.res
@@ -1,7 +1,11 @@
 open Vitest
 
 test("renders current version label", async () => {
-  let screen = await render(<VersionSelect />)
+  let screen = await render(
+    <ReactRouter.MemoryRouter initialEntries=["/docs/manual/introduction"]>
+      <VersionSelect />
+    </ReactRouter.MemoryRouter>,
+  )
 
   let el = await screen->getByTestId("version-select")
   await element(el)->toBeVisible
@@ -10,8 +14,12 @@ test("renders current version label", async () => {
   await element(label)->toBeVisible
 })
 
-test("clicking button shows older versions", async () => {
-  let screen = await render(<VersionSelect />)
+test("clicking button shows the v13 preview and older versions", async () => {
+  let screen = await render(
+    <ReactRouter.MemoryRouter initialEntries=["/docs/manual/introduction"]>
+      <VersionSelect />
+    </ReactRouter.MemoryRouter>,
+  )
 
   // Menu should be hidden initially
   let v11 = await screen->getByText("v11")
@@ -21,6 +29,13 @@ test("clicking button shows older versions", async () => {
   let button = await screen->getByRole(#button)
   await button->click
 
+  let preview = await screen->getByText("v13 (preview)")
+  await element(preview)->toBeVisible
+  await element(preview)->toHaveAttribute(
+    "href",
+    "https://v13.rescript-lang.org/docs/manual/introduction",
+  )
+
   // Older versions should now be visible
   let v11After = await screen->getByText("v11")
   await element(v11After)->toBeVisible
@@ -36,7 +51,11 @@ test("clicking button shows older versions", async () => {
 })
 
 test("clicking button again closes older versions", async () => {
-  let screen = await render(<VersionSelect />)
+  let screen = await render(
+    <ReactRouter.MemoryRouter initialEntries=["/docs/manual/introduction"]>
+      <VersionSelect />
+    </ReactRouter.MemoryRouter>,
+  )
 
   let button = await screen->getByRole(#button)
 
@@ -53,14 +72,16 @@ test("clicking button again closes older versions", async () => {
 
 test("multiple instances have unique popover IDs", async () => {
   let screen = await render(
-    <div>
-      <div dataTestId="first">
-        <VersionSelect />
-      </div>
-      <div dataTestId="second">
-        <VersionSelect />
+    <ReactRouter.MemoryRouter initialEntries=["/docs/manual/introduction"]>
+      <div>
+        <div dataTestId="first">
+          <VersionSelect />
+        </div>
+        <div dataTestId="second">
+          <VersionSelect />
+        </div>
       </div>
-    </div>,
+    </ReactRouter.MemoryRouter>,
   )
 
   let first = await screen->getByTestId("first")
@@ -78,3 +99,29 @@ test("multiple instances have unique popover IDs", async () => {
   let secondV11 = await second->getByText("v11")
   await element(secondV11)->notToBeVisible
 })
+
+test("switching to v13 preserves the manual page, query, and anchor", async () => {
+  let path = "/docs/manual/array-and-list?view=full#immutable-lists"
+  let screen = await render(
+    <ReactRouter.MemoryRouter initialEntries=[path]>
+      <VersionSelect />
+    </ReactRouter.MemoryRouter>,
+  )
+  let button = await screen->getByRole(#button)
+  await button->click
+  let preview = await screen->getByText("v13 (preview)")
+  await element(preview)->toHaveAttribute("href", "https://v13.rescript-lang.org" ++ path)
+})
+
+test("switching to v13 preserves the API module", async () => {
+  let path = "/docs/manual/api/stdlib/array#value-map"
+  let screen = await render(
+    <ReactRouter.MemoryRouter initialEntries=[path]>
+      <VersionSelect />
+    </ReactRouter.MemoryRouter>,
+  )
+  let button = await screen->getByRole(#button)
+  await button->click
+  let preview = await screen->getByText("v13 (preview)")
+  await element(preview)->toHaveAttribute("href", "https://v13.rescript-lang.org" ++ path)
+})
diff --git a/apps/docs/src/components/VersionSelect.res b/apps/docs/src/components/VersionSelect.res
index df8b957c4..90e8eca9e 100644
--- a/apps/docs/src/components/VersionSelect.res
+++ b/apps/docs/src/components/VersionSelect.res
@@ -17,10 +17,17 @@ let version = DocsVersion.current
 
 @react.component
 let make = () => {
+  let location = ReactRouter.useLocation()
+  let search = location.search->Option.getOr("")
+  let hash = location.hash->Option.getOr("")
+  let previewHref =
+    "https://v13.rescript-lang.org" ++ (location.pathname :> string) ++ search ++ hash
+  let previewVersions =
+    DocsVersion.current === "v13" ? [] : [{label: "v13 (preview)", link: previewHref}]
   let id = React.useId()
   let popoverId = "older-versions-" ++ id
 
-  let children = Array.map(olderVersions, ver => {
+  let children = [...previewVersions, ...olderVersions]->Array.map(ver => {
     <a className="py-0.5 block hover:underline" key=ver.label href=ver.link>
       {React.string(ver.label)}
     </a>