diff --git a/.changeset/tanstack-start-csrf-minimum.md b/.changeset/tanstack-start-csrf-minimum.md
new file mode 100644
index 00000000000..a4746ad845d
--- /dev/null
+++ b/.changeset/tanstack-start-csrf-minimum.md
@@ -0,0 +1,22 @@
+---
+'@clerk/tanstack-react-start': minor
+---
+
+Raise the minimum supported peer dependencies to `@tanstack/react-start@^1.168.10` and `@tanstack/react-router@^1.170.7`. Start 1.168.10 is the first version where importing `createCsrfMiddleware()` works reliably during Vite SSR.
+
+TanStack Start skips its default CSRF protection for server functions when your app has a `src/start.ts`, which `clerkMiddleware()` requires. Register `createCsrfMiddleware()` before `clerkMiddleware()` to restore it:
+
+```ts
+import { clerkMiddleware } from '@clerk/tanstack-react-start/server';
+import { createCsrfMiddleware, createStart } from '@tanstack/react-start';
+
+const csrfMiddleware = createCsrfMiddleware({
+  filter: (ctx) => ctx.handlerType === 'serverFn',
+});
+
+export const startInstance = createStart(() => {
+  return {
+    requestMiddleware: [csrfMiddleware, clerkMiddleware()],
+  };
+});
+```
diff --git a/packages/tanstack-react-start/README.md b/packages/tanstack-react-start/README.md
index c812aa77537..f5e48ff6d1f 100644
--- a/packages/tanstack-react-start/README.md
+++ b/packages/tanstack-react-start/README.md
@@ -31,8 +31,8 @@
 
 ### Prerequisites
 
-- TanStack Start `^1.157.0` or later
-- TanStack Router `^1.157.0` or later
+- TanStack Start `^1.168.10` or later
+- TanStack Router `^1.170.7` or later
 - React 18 or later
 - Node.js `>=20.9.0` or later
 - An existing Clerk application. [Create your account for free](https://dashboard.clerk.com/sign-up?utm_source=github&utm_medium=clerk_tanstack_react_start).
diff --git a/packages/tanstack-react-start/package.json b/packages/tanstack-react-start/package.json
index 47f9164f764..37d46b81ddd 100644
--- a/packages/tanstack-react-start/package.json
+++ b/packages/tanstack-react-start/package.json
@@ -90,8 +90,8 @@
     "esbuild-plugin-file-path-extensions": "^2.1.4"
   },
   "peerDependencies": {
-    "@tanstack/react-router": "^1.168.10",
-    "@tanstack/react-start": "^1.167.17",
+    "@tanstack/react-router": "^1.170.7",
+    "@tanstack/react-start": "^1.168.10",
     "react": "catalog:peer-react",
     "react-dom": "catalog:peer-react"
   },