diff --git a/examples/react/nextjs-suspense-streaming/src/app/page.tsx b/examples/react/nextjs-suspense-streaming/src/app/page.tsx
index 67eedee7b9f..66023daa723 100644
--- a/examples/react/nextjs-suspense-streaming/src/app/page.tsx
+++ b/examples/react/nextjs-suspense-streaming/src/app/page.tsx
@@ -1,11 +1,11 @@
 'use client'
-import { isServer, useSuspenseQuery } from '@tanstack/react-query'
+import { environmentManager, useSuspenseQuery } from '@tanstack/react-query'
 import { Suspense } from 'react'
 
 export const runtime = 'edge' // 'nodejs' (default) | 'edge'
 
 function getBaseURL() {
-  if (!isServer) {
+  if (!environmentManager.isServer()) {
     return ''
   }
   if (process.env.VERCEL_URL) {
diff --git a/integrations/react-next-15/app/providers.tsx b/integrations/react-next-15/app/providers.tsx
index aa52fc1d35c..3ca21b143ef 100644
--- a/integrations/react-next-15/app/providers.tsx
+++ b/integrations/react-next-15/app/providers.tsx
@@ -2,7 +2,7 @@
 'use client'
 
 // Since QueryClientProvider relies on useContext under the hood, we have to put 'use client' on top
-import { QueryClientProvider, isServer } from '@tanstack/react-query'
+import { QueryClientProvider, environmentManager } from '@tanstack/react-query'
 import { ReactQueryDevtools } from '@tanstack/react-query-devtools'
 import type { QueryClient } from '@tanstack/react-query'
 import { makeQueryClient } from '@/app/make-query-client'
@@ -10,7 +10,7 @@ import { makeQueryClient } from '@/app/make-query-client'
 let browserQueryClient: QueryClient | undefined = undefined
 
 function getQueryClient() {
-  if (isServer) {
+  if (environmentManager.isServer()) {
     // Server: always make a new query client
     return makeQueryClient()
   } else {
diff --git a/integrations/react-next-16/app/providers.tsx b/integrations/react-next-16/app/providers.tsx
index aa52fc1d35c..3ca21b143ef 100644
--- a/integrations/react-next-16/app/providers.tsx
+++ b/integrations/react-next-16/app/providers.tsx
@@ -2,7 +2,7 @@
 'use client'
 
 // Since QueryClientProvider relies on useContext under the hood, we have to put 'use client' on top
-import { QueryClientProvider, isServer } from '@tanstack/react-query'
+import { QueryClientProvider, environmentManager } from '@tanstack/react-query'
 import { ReactQueryDevtools } from '@tanstack/react-query-devtools'
 import type { QueryClient } from '@tanstack/react-query'
 import { makeQueryClient } from '@/app/make-query-client'
@@ -10,7 +10,7 @@ import { makeQueryClient } from '@/app/make-query-client'
 let browserQueryClient: QueryClient | undefined = undefined
 
 function getQueryClient() {
-  if (isServer) {
+  if (environmentManager.isServer()) {
     // Server: always make a new query client
     return makeQueryClient()
   } else {