diff --git a/packages/plugin-rsc/examples/basic/src/framework/entry.rsc.tsx b/packages/plugin-rsc/examples/basic/src/framework/entry.rsc.tsx
index f3fff1842..b98c4433f 100644
--- a/packages/plugin-rsc/examples/basic/src/framework/entry.rsc.tsx
+++ b/packages/plugin-rsc/examples/basic/src/framework/entry.rsc.tsx
@@ -85,7 +85,7 @@ export async function handleRequest({
   }
 
   // Delegate to SSR environment for html rendering.
-  // The plugin provides `loadSsrModule` helper to allow loading SSR environment entry module
+  // The plugin provides `loadModule` helper to allow loading SSR environment entry module
   // in RSC environment. however this can be customized by implementing own runtime communication
   // e.g. `@cloudflare/vite-plugin`'s service binding.
   const ssrEntryModule = await import.meta.viteRsc.loadModule<
diff --git a/packages/plugin-rsc/examples/e2e/package.json b/packages/plugin-rsc/examples/e2e/package.json
index 9121f0090..0274499a3 100644
--- a/packages/plugin-rsc/examples/e2e/package.json
+++ b/packages/plugin-rsc/examples/e2e/package.json
@@ -7,6 +7,7 @@
     "@vitejs/plugin-rsc": "latest",
     "babel-plugin-react-compiler": "19.1.0-rc.3",
     "connect": "^3.7.0",
+    "rsc-html-stream": "^0.0.7",
     "sirv": "^3.0.2"
   }
 }
diff --git a/packages/plugin-rsc/examples/starter/src/framework/entry.rsc.tsx b/packages/plugin-rsc/examples/starter/src/framework/entry.rsc.tsx
index fa1c27845..ab5a55a24 100644
--- a/packages/plugin-rsc/examples/starter/src/framework/entry.rsc.tsx
+++ b/packages/plugin-rsc/examples/starter/src/framework/entry.rsc.tsx
@@ -85,7 +85,7 @@ export default async function handler(request: Request): Promise<Response> {
   }
 
   // Delegate to SSR environment for html rendering.
-  // The plugin provides `loadSsrModule` helper to allow loading SSR environment entry module
+  // The plugin provides `loadModule` helper to allow loading SSR environment entry module
   // in RSC environment. however this can be customized by implementing own runtime communication
   // e.g. `@cloudflare/vite-plugin`'s service binding.
   const ssrEntryModule = await import.meta.viteRsc.loadModule<
diff --git a/packages/plugin-rsc/package.json b/packages/plugin-rsc/package.json
index 8fe6c56c2..74210f460 100644
--- a/packages/plugin-rsc/package.json
+++ b/packages/plugin-rsc/package.json
@@ -60,7 +60,6 @@
     "react": "^19.1.1",
     "react-dom": "^19.1.1",
     "react-server-dom-webpack": "^19.1.1",
-    "rsc-html-stream": "^0.0.7",
     "tinyexec": "^1.0.1",
     "tsdown": "^0.15.6"
   },
diff --git a/packages/plugin-rsc/src/extra/browser.tsx b/packages/plugin-rsc/src/extra/browser.tsx
deleted file mode 100644
index 4bf272e9a..000000000
--- a/packages/plugin-rsc/src/extra/browser.tsx
+++ /dev/null
@@ -1,132 +0,0 @@
-import React from 'react'
-import ReactDomClient from 'react-dom/client'
-import { rscStream } from 'rsc-html-stream/client'
-import {
-  type CallServerCallback,
-  createFromFetch,
-  createFromReadableStream,
-  createTemporaryReferenceSet,
-  encodeReply,
-  setServerCallback,
-} from '../browser'
-import type { RscPayload } from './rsc'
-
-/**
- * @deprecated Use `@vitejs/plugin-rsc/browser` API instead.
- */
-export async function hydrate(): Promise<void> {
-  const callServer: CallServerCallback = async (id, args) => {
-    const url = new URL(window.location.href)
-    const temporaryReferences = createTemporaryReferenceSet()
-    const payload = await createFromFetch<RscPayload>(
-      fetch(url, {
-        method: 'POST',
-        body: await encodeReply(args, { temporaryReferences }),
-        headers: {
-          'x-rsc-action': id,
-        },
-      }),
-      { temporaryReferences },
-    )
-    setPayload(payload)
-    return payload.returnValue
-  }
-  setServerCallback(callServer)
-
-  async function onNavigation() {
-    const url = new URL(window.location.href)
-    const payload = await createFromFetch<RscPayload>(fetch(url))
-    setPayload(payload)
-  }
-
-  const initialPayload = await createFromReadableStream<RscPayload>(rscStream)
-
-  let setPayload: (v: RscPayload) => void
-
-  function BrowserRoot() {
-    const [payload, setPayload_] = React.useState(initialPayload)
-
-    React.useEffect(() => {
-      setPayload = (v) => React.startTransition(() => setPayload_(v))
-    }, [setPayload_])
-
-    React.useEffect(() => {
-      return listenNavigation(() => onNavigation())
-    }, [])
-
-    return payload.root
-  }
-
-  const browserRoot = (
-    <React.StrictMode>
-      <BrowserRoot />
-    </React.StrictMode>
-  )
-
-  ReactDomClient.hydrateRoot(document, browserRoot, {
-    formState: initialPayload.formState,
-  })
-
-  if (import.meta.hot) {
-    import.meta.hot.on('rsc:update', () => {
-      window.history.replaceState({}, '', window.location.href)
-    })
-  }
-}
-
-/**
- * @deprecated Use `@vitejs/plugin-rsc/browser` API instead.
- */
-export async function fetchRSC(
-  request: string | URL | Request,
-): Promise<RscPayload['root']> {
-  const payload = await createFromFetch<RscPayload>(fetch(request))
-  return payload.root
-}
-
-function listenNavigation(onNavigation: () => void): () => void {
-  window.addEventListener('popstate', onNavigation)
-
-  const oldPushState = window.history.pushState
-  window.history.pushState = function (...args) {
-    const res = oldPushState.apply(this, args)
-    onNavigation()
-    return res
-  }
-
-  const oldReplaceState = window.history.replaceState
-  window.history.replaceState = function (...args) {
-    const res = oldReplaceState.apply(this, args)
-    onNavigation()
-    return res
-  }
-
-  function onClick(e: MouseEvent) {
-    let link = (e.target as Element).closest('a')
-    if (
-      link &&
-      link instanceof HTMLAnchorElement &&
-      link.href &&
-      (!link.target || link.target === '_self') &&
-      link.origin === location.origin &&
-      !link.hasAttribute('download') &&
-      e.button === 0 && // left clicks only
-      !e.metaKey && // open in new tab (mac)
-      !e.ctrlKey && // open in new tab (windows)
-      !e.altKey && // download
-      !e.shiftKey &&
-      !e.defaultPrevented
-    ) {
-      e.preventDefault()
-      history.pushState(null, '', link.href)
-    }
-  }
-  document.addEventListener('click', onClick)
-
-  return () => {
-    document.removeEventListener('click', onClick)
-    window.removeEventListener('popstate', onNavigation)
-    window.history.pushState = oldPushState
-    window.history.replaceState = oldReplaceState
-  }
-}
diff --git a/packages/plugin-rsc/src/extra/rsc.tsx b/packages/plugin-rsc/src/extra/rsc.tsx
deleted file mode 100644
index 393dae1dd..000000000
--- a/packages/plugin-rsc/src/extra/rsc.tsx
+++ /dev/null
@@ -1,96 +0,0 @@
-import type { ReactFormState } from 'react-dom/client'
-import {
-  createTemporaryReferenceSet,
-  decodeAction,
-  decodeFormState,
-  decodeReply,
-  loadServerAction,
-  renderToReadableStream,
-} from '../rsc'
-
-export type RscPayload = {
-  root: React.ReactNode
-  formState?: ReactFormState
-  returnValue?: unknown
-}
-
-/**
- * @deprecated Use `@vitejs/plugin-rsc/rsc` API instead.
- */
-export async function renderRequest(
-  request: Request,
-  root: React.ReactNode,
-  options?: { nonce?: string },
-): Promise<Response> {
-  function RscRoot() {
-    // https://vite.dev/guide/features.html#content-security-policy-csp
-    // this isn't needed if `style-src: 'unsafe-inline'` (dev) and `script-src: 'self'`
-    const nonceMeta = options?.nonce && (
-      <meta property="csp-nonce" nonce={options.nonce} />
-    )
-    return (
-      <>
-        {nonceMeta}
-        {root}
-      </>
-    )
-  }
-
-  const url = new URL(request.url)
-  const isAction = request.method === 'POST'
-
-  // use ?__rsc and ?__html for quick debugging
-  const isRscRequest =
-    (!request.headers.get('accept')?.includes('text/html') &&
-      !url.searchParams.has('__html')) ||
-    url.searchParams.has('__rsc')
-
-  // TODO: error handling
-  // callAction
-  let returnValue: unknown | undefined
-  let formState: ReactFormState | undefined
-  let temporaryReferences: unknown | undefined
-  if (isAction) {
-    const actionId = request.headers.get('x-rsc-action')
-    if (actionId) {
-      // client stream request
-      const contentType = request.headers.get('content-type')
-      const body = contentType?.startsWith('multipart/form-data')
-        ? await request.formData()
-        : await request.text()
-      temporaryReferences = createTemporaryReferenceSet()
-      const args = await decodeReply(body, { temporaryReferences })
-      const action = await loadServerAction(actionId)
-      returnValue = await action.apply(null, args)
-    } else {
-      // progressive enhancement
-      const formData = await request.formData()
-      const decodedAction = await decodeAction(formData)
-      const result = await decodedAction()
-      formState = await decodeFormState(result, formData)
-    }
-  }
-
-  const rscPayload: RscPayload = { root: <RscRoot />, formState, returnValue }
-  const rscOptions = { temporaryReferences }
-  const rscStream = renderToReadableStream<RscPayload>(rscPayload, rscOptions)
-
-  if (isRscRequest) {
-    return new Response(rscStream, {
-      headers: {
-        'content-type': 'text/x-component;charset=utf-8',
-        vary: 'accept',
-      },
-    })
-  }
-
-  const ssrEntry = await import.meta.viteRsc.loadModule<typeof import('./ssr')>(
-    'ssr',
-    'index',
-  )
-  return ssrEntry.renderHtml(rscStream, {
-    formState,
-    nonce: options?.nonce,
-    debugNoJs: url.searchParams.has('__nojs'),
-  })
-}
diff --git a/packages/plugin-rsc/src/extra/ssr.tsx b/packages/plugin-rsc/src/extra/ssr.tsx
deleted file mode 100644
index 6e8c71bb2..000000000
--- a/packages/plugin-rsc/src/extra/ssr.tsx
+++ /dev/null
@@ -1,57 +0,0 @@
-import React from 'react'
-import type { ReactFormState } from 'react-dom/client'
-import ReactDomServer from 'react-dom/server.edge'
-import { injectRSCPayload } from 'rsc-html-stream/server'
-import { createFromReadableStream } from '../ssr'
-import type { RscPayload } from './rsc'
-
-/**
- * @deprecated Use `@vitejs/plugin-rsc/ssr` API instead.
- */
-export async function renderHtml(
-  rscStream: ReadableStream<Uint8Array>,
-  options?: {
-    formState?: ReactFormState
-    nonce?: string
-    debugNoJs?: boolean
-  },
-): Promise<Response> {
-  const [rscStream1, rscStream2] = rscStream.tee()
-
-  // flight deserialization needs to be kicked off inside SSR context
-  // for ReactDomServer preinit/preloading to work
-  let payload: Promise<RscPayload>
-  function SsrRoot() {
-    payload ??= createFromReadableStream<RscPayload>(rscStream1, {
-      nonce: options?.nonce,
-    })
-    const root = React.use(payload).root
-    return root
-  }
-
-  const bootstrapScriptContent =
-    await import.meta.viteRsc.loadBootstrapScriptContent('index')
-  const htmlStream = await ReactDomServer.renderToReadableStream(<SsrRoot />, {
-    bootstrapScriptContent: options?.debugNoJs
-      ? undefined
-      : bootstrapScriptContent,
-    nonce: options?.nonce,
-    formState: options?.formState,
-  })
-
-  let responseStream: ReadableStream<Uint8Array> = htmlStream
-  if (!options?.debugNoJs) {
-    responseStream = responseStream.pipeThrough(
-      injectRSCPayload(rscStream2, {
-        nonce: options?.nonce,
-      }),
-    )
-  }
-
-  return new Response(responseStream, {
-    headers: {
-      'content-type': 'text/html;charset=utf-8',
-      vary: 'accept',
-    },
-  })
-}
diff --git a/packages/plugin-rsc/src/plugin.ts b/packages/plugin-rsc/src/plugin.ts
index 2d7605de3..1dd69d51a 100644
--- a/packages/plugin-rsc/src/plugin.ts
+++ b/packages/plugin-rsc/src/plugin.ts
@@ -124,9 +124,6 @@ export type RscPluginOptions = {
    */
   entries?: Partial<Record<'client' | 'ssr' | 'rsc', string>>
 
-  /** @deprecated use `serverHandler: false` */
-  disableServerHandler?: boolean
-
   /** @default { enviornmentName: "rsc", entryName: "index" } */
   serverHandler?:
     | {
@@ -140,9 +137,6 @@ export type RscPluginOptions = {
 
   rscCssTransform?: false | { filter?: (id: string) => boolean }
 
-  /** @deprecated use "DEBUG=vite-env:*" to see warnings. */
-  ignoredPackageWarnings?: (string | RegExp)[]
-
   /**
    * This option allows customizing how client build copies assets from server build.
    * By default, all assets are copied, but frameworks can establish server asset convention
@@ -502,7 +496,6 @@ export default function vitePluginRsc(
           return oldSend.apply(this, args as any)
         }
 
-        if (rscPluginOptions.disableServerHandler) return
         if (rscPluginOptions.serverHandler === false) return
         const options = rscPluginOptions.serverHandler ?? {
           environmentName: 'rsc',
@@ -539,7 +532,6 @@ export default function vitePluginRsc(
         }
       },
       async configurePreviewServer(server) {
-        if (rscPluginOptions.disableServerHandler) return
         if (rscPluginOptions.serverHandler === false) return
         const options = rscPluginOptions.serverHandler ?? {
           environmentName: 'rsc',
@@ -701,18 +693,6 @@ export default function vitePluginRsc(
         },
       },
     },
-    {
-      // backward compat: `loadSsrModule(name)` implemented as `loadModule("ssr", name)`
-      name: 'rsc:load-ssr-module',
-      transform(code) {
-        if (code.includes('import.meta.viteRsc.loadSsrModule(')) {
-          return code.replaceAll(
-            `import.meta.viteRsc.loadSsrModule(`,
-            `import.meta.viteRsc.loadModule("ssr", `,
-          )
-        }
-      },
-    },
     {
       // allow loading entry module in other environment by
       // - (dev) rewriting to `server.environments[<env>].runner.import(<entry>)`
diff --git a/packages/plugin-rsc/src/rsc-html-stream/browser.ts b/packages/plugin-rsc/src/rsc-html-stream/browser.ts
deleted file mode 100644
index 166faf332..000000000
--- a/packages/plugin-rsc/src/rsc-html-stream/browser.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-import * as rscHtmlStreamClient from 'rsc-html-stream/client'
-
-/** @deprecated use `rsc-html-stream/client` instead */
-export const getRscStreamFromHtml = (): ReadableStream<Uint8Array> =>
-  rscHtmlStreamClient.rscStream
diff --git a/packages/plugin-rsc/src/rsc-html-stream/ssr.ts b/packages/plugin-rsc/src/rsc-html-stream/ssr.ts
deleted file mode 100644
index 92c0b57d1..000000000
--- a/packages/plugin-rsc/src/rsc-html-stream/ssr.ts
+++ /dev/null
@@ -1,8 +0,0 @@
-import * as rscHtmlStreamServer from 'rsc-html-stream/server'
-
-/** @deprecated use `rsc-html-stream/server` instead */
-export const injectRscStreamToHtml = (
-  stream: ReadableStream<Uint8Array>,
-  options?: { nonce?: string },
-): TransformStream<Uint8Array, Uint8Array> =>
-  rscHtmlStreamServer.injectRSCPayload(stream, options)
diff --git a/packages/plugin-rsc/tsdown.config.ts b/packages/plugin-rsc/tsdown.config.ts
index a385c8377..896808538 100644
--- a/packages/plugin-rsc/tsdown.config.ts
+++ b/packages/plugin-rsc/tsdown.config.ts
@@ -15,13 +15,8 @@ export default defineConfig({
     'src/react/browser.ts',
     'src/react/ssr.ts',
     'src/react/rsc.ts',
-    'src/extra/browser.tsx',
-    'src/extra/ssr.tsx',
-    'src/extra/rsc.tsx',
     'src/transforms/index.ts',
     'src/plugins/cjs.ts',
-    'src/rsc-html-stream/ssr.ts',
-    'src/rsc-html-stream/browser.ts',
     'src/utils/rpc.ts',
     'src/utils/encryption-runtime.ts',
   ],
diff --git a/packages/plugin-rsc/types/index.d.ts b/packages/plugin-rsc/types/index.d.ts
index ea900dcc0..6f19dd7a6 100644
--- a/packages/plugin-rsc/types/index.d.ts
+++ b/packages/plugin-rsc/types/index.d.ts
@@ -1,11 +1,7 @@
-import './virtual'
-
 declare global {
   interface ImportMeta {
     readonly viteRsc: {
       loadCss: (importer?: string) => import('react').ReactNode
-      /** @deprecated use `loadModule("ssr", entry)` instead */
-      loadSsrModule: <T>(entry: string) => Promise<T>
       loadModule: <T>(environmentName: string, entryName: string) => Promise<T>
       loadBootstrapScriptContent: (entryName: string) => Promise<string>
     }
diff --git a/packages/plugin-rsc/types/virtual.d.ts b/packages/plugin-rsc/types/virtual.d.ts
deleted file mode 100644
index cf9ba0ccc..000000000
--- a/packages/plugin-rsc/types/virtual.d.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-declare module 'virtual:vite-rsc/bootstrap-script-content' {
-  /** @deprecated use `import.meta.viteRsc.loadBootstrapScriptContent("index")` instead */
-  const bootstrapScriptContent: string
-  export default bootstrapScriptContent
-}
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index df022fd61..7e1ab0494 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -490,9 +490,6 @@ importers:
       react-server-dom-webpack:
         specifier: ^19.1.1
         version: 19.1.1(react-dom@19.1.1(react@19.1.1))(react@19.1.1)
-      rsc-html-stream:
-        specifier: ^0.0.7
-        version: 0.0.7
       tinyexec:
         specifier: ^1.0.1
         version: 1.0.1
@@ -597,6 +594,9 @@ importers:
       connect:
         specifier: ^3.7.0
         version: 3.7.0
+      rsc-html-stream:
+        specifier: ^0.0.7
+        version: 0.0.7
       sirv:
         specifier: ^3.0.2
         version: 3.0.2