diff --git a/.github/workflows/examples-old-nodes.yml b/.github/workflows/examples-old-nodes.yml
index 394ebcfb252..d04105cd244 100644
--- a/.github/workflows/examples-old-nodes.yml
+++ b/.github/workflows/examples-old-nodes.yml
@@ -13,7 +13,7 @@ jobs:
       matrix:
         dir: [.interop/next-prisma-starter]
         # start example with:
-        node-start: ['14.x']
+        node-start: ['14.x', '16.x']
         os: [ubuntu-latest]
     steps:
       - uses: actions/checkout@v3
@@ -22,7 +22,7 @@ jobs:
 
       - uses: actions/setup-node@v3
         with:
-          node-version: 16.x
+          node-version: 18.x
 
       - name: Get pnpm store directory
         id: pnpm-cache
diff --git a/.github/workflows/examples.yml b/.github/workflows/examples.yml
index a3311a489a5..8abddca00d7 100644
--- a/.github/workflows/examples.yml
+++ b/.github/workflows/examples.yml
@@ -42,7 +42,7 @@ jobs:
             standalone-server,
             .test/big-router-declaration,
           ]
-        node-start: ['16.x']
+        node-start: ['18.x']
         os: [ubuntu-latest]
     steps:
       - uses: actions/checkout@v3
@@ -53,7 +53,7 @@ jobs:
 
       - uses: actions/setup-node@v3
         with:
-          node-version: 16.x
+          node-version: 18.x
 
       - name: Get pnpm store directory
         id: pnpm-cache
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index c1c6060d2d5..618769989b3 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -19,7 +19,7 @@ jobs:
 
       - uses: actions/setup-node@v3
         with:
-          node-version: 16.x
+          node-version: 18.x
 
       - name: Get pnpm store directory
         id: pnpm-cache
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 7d8e47e007f..56173c640b2 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -14,7 +14,7 @@ jobs:
 
     strategy:
       matrix:
-        node: ['16.x']
+        node: ['18.x']
         os: [ubuntu-latest]
 
     steps:
diff --git a/examples/.interop/cloudflare-workers/package.json b/examples/.interop/cloudflare-workers/package.json
index 0de3b8fe2bb..68eea675809 100644
--- a/examples/.interop/cloudflare-workers/package.json
+++ b/examples/.interop/cloudflare-workers/package.json
@@ -5,7 +5,7 @@
   "type": "module",
   "scripts": {
     "dev": "wrangler dev",
-    "test-dev": "start-server-and-test 'wrangler dev --local' 8787 'tsx src/client.ts'"
+    "test-dev": "start-server-and-test 'wrangler dev --local' http://127.0.0.1:8787 'tsx src/client.ts'"
   },
   "dependencies": {
     "@trpc/client": "^10.1.0",
@@ -24,4 +24,4 @@
   "publishConfig": {
     "access": "restricted"
   }
-}
+}
\ No newline at end of file
diff --git a/examples/.interop/cloudflare-workers/src/client.ts b/examples/.interop/cloudflare-workers/src/client.ts
index d0668dc3550..c00d0f2e0e9 100644
--- a/examples/.interop/cloudflare-workers/src/client.ts
+++ b/examples/.interop/cloudflare-workers/src/client.ts
@@ -8,7 +8,7 @@ global.fetch = fetch as any;
 const sleep = (ms = 100) => new Promise((resolve) => setTimeout(resolve, ms));
 
 async function main() {
-  const url = 'http://localhost:8787';
+  const url = 'http://127.0.0.1:8787';
 
   const client = createTRPCClient<AppRouter>({
     links: [loggerLink(), httpBatchLink({ url })],
diff --git a/examples/.interop/fastify-server/src/client/client.ts b/examples/.interop/fastify-server/src/client/client.ts
index 0cc231273ed..45a7aa23507 100644
--- a/examples/.interop/fastify-server/src/client/client.ts
+++ b/examples/.interop/fastify-server/src/client/client.ts
@@ -22,7 +22,7 @@ export function createClient(
 ) {
   const port = opts.port ?? 3000;
   const prefix = opts.prefix ?? '/trpc';
-  const host = `127.0.0.1:${port}${prefix}`;
+  const host = `localhost:${port}${prefix}`;
   const wsClient = createWSClient({ url: `ws://${host}` });
   const client = createTRPCClient<AppRouter>({
     links: [
diff --git a/examples/.interop/next-prisma-starter/.github/workflows/main.yml b/examples/.interop/next-prisma-starter/.github/workflows/main.yml
index f1d7c397765..d349ed73fab 100644
--- a/examples/.interop/next-prisma-starter/.github/workflows/main.yml
+++ b/examples/.interop/next-prisma-starter/.github/workflows/main.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        node: ['16.x']
+        node: ['18.x']
         os: [ubuntu-latest]
     steps:
       - name: Checkout repo
diff --git a/examples/.interop/next-prisma-starter/package.json b/examples/.interop/next-prisma-starter/package.json
index e7e961e229a..3860010f159 100644
--- a/examples/.interop/next-prisma-starter/package.json
+++ b/examples/.interop/next-prisma-starter/package.json
@@ -26,8 +26,8 @@
     "test": "run-s test:*",
     "test:unit": "vitest run",
     "test:e2e": "playwright test",
-    "test-dev": "start-server-and-test 'next dev' 3000 test",
-    "test-start": "start-server-and-test start 3000 test",
+    "test-dev": "start-server-and-test 'next dev' http://127.0.0.1:3000 test",
+    "test-start": "start-server-and-test start http://127.0.0.1:3000 test",
     "postinstall": "prisma generate"
   },
   "prisma": {
@@ -77,4 +77,4 @@
   "publishConfig": {
     "access": "restricted"
   }
-}
+}
\ No newline at end of file
diff --git a/examples/.interop/next-prisma-starter/src/pages/_app.tsx b/examples/.interop/next-prisma-starter/src/pages/_app.tsx
index 33bd485515c..d0bacc0cc6a 100644
--- a/examples/.interop/next-prisma-starter/src/pages/_app.tsx
+++ b/examples/.interop/next-prisma-starter/src/pages/_app.tsx
@@ -42,7 +42,7 @@ function getBaseUrl() {
   }
 
   // assume localhost
-  return `http://localhost:${process.env.PORT ?? 3000}`;
+  return `http://127.0.0.1:${process.env.PORT ?? 3000}`;
 }
 
 export default withTRPC<AppRouter>({
diff --git a/examples/.interop/next-prisma-todomvc/package.json b/examples/.interop/next-prisma-todomvc/package.json
index e8d3de60584..1871af6d3ea 100644
--- a/examples/.interop/next-prisma-todomvc/package.json
+++ b/examples/.interop/next-prisma-todomvc/package.json
@@ -21,8 +21,8 @@
     "migrate-dev": "prisma migrate dev",
     "migrate": "prisma migrate deploy",
     "test": "playwright test",
-    "test-dev": "start-server-and-test 'next dev' 3000 test",
-    "test-start": "start-server-and-test start 3000 test",
+    "test-dev": "start-server-and-test 'next dev' http://127.0.0.1:3000 test",
+    "test-start": "start-server-and-test start http://127.0.0.1:3000 test",
     "postinstall": "prisma generate"
   },
   "dependencies": {
@@ -54,4 +54,4 @@
   "publishConfig": {
     "access": "restricted"
   }
-}
+}
\ No newline at end of file
diff --git a/examples/.interop/next-prisma-websockets-starter/.github/workflows/main.yml b/examples/.interop/next-prisma-websockets-starter/.github/workflows/main.yml
index f1d7c397765..d349ed73fab 100644
--- a/examples/.interop/next-prisma-websockets-starter/.github/workflows/main.yml
+++ b/examples/.interop/next-prisma-websockets-starter/.github/workflows/main.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        node: ['16.x']
+        node: ['18.x']
         os: [ubuntu-latest]
     steps:
       - name: Checkout repo
diff --git a/examples/.test/ssg/package.json b/examples/.test/ssg/package.json
index 01b225e7f6b..1836a410df4 100644
--- a/examples/.test/ssg/package.json
+++ b/examples/.test/ssg/package.json
@@ -7,8 +7,8 @@
     "build": "next build",
     "start": "next start",
     "test:e2e": "playwright test",
-    "test-dev": "start-server-and-test dev 3000 test:e2e",
-    "test-start": "start-server-and-test start 3000 test:e2e"
+    "test-dev": "start-server-and-test dev http://127.0.0.1:3000 test:e2e",
+    "test-start": "start-server-and-test start http://127.0.0.1:3000 test:e2e"
   },
   "dependencies": {
     "@tanstack/react-query": "^4.3.8",
@@ -30,4 +30,4 @@
     "start-server-and-test": "^1.12.0",
     "typescript": "^4.8.3"
   }
-}
+}
\ No newline at end of file
diff --git a/examples/cloudflare-workers/package.json b/examples/cloudflare-workers/package.json
index e543ce178b3..3a18fa39615 100644
--- a/examples/cloudflare-workers/package.json
+++ b/examples/cloudflare-workers/package.json
@@ -5,7 +5,7 @@
   "type": "module",
   "scripts": {
     "dev": "wrangler dev",
-    "test-dev": "start-server-and-test 'wrangler dev --local' 8787 'tsx src/client.ts'"
+    "test-dev": "start-server-and-test 'wrangler dev --local' http://127.0.0.1:8787 'tsx src/client.ts'"
   },
   "dependencies": {
     "@trpc/client": "^10.1.0",
@@ -25,4 +25,4 @@
   "publishConfig": {
     "access": "restricted"
   }
-}
+}
\ No newline at end of file
diff --git a/examples/cloudflare-workers/src/client.ts b/examples/cloudflare-workers/src/client.ts
index 469602fb05d..85783cfe31c 100644
--- a/examples/cloudflare-workers/src/client.ts
+++ b/examples/cloudflare-workers/src/client.ts
@@ -13,7 +13,7 @@ globalThis.fetch = fetch as any;
 const sleep = (ms = 100) => new Promise((resolve) => setTimeout(resolve, ms));
 
 async function main() {
-  const url = 'http://localhost:8787';
+  const url = 'http://127.0.0.1:8787';
 
   const client = createTRPCClient<AppRouter>({
     links: [loggerLink(), httpBatchLink({ url })],
diff --git a/examples/next-prisma-starter/.github/workflows/main.yml b/examples/next-prisma-starter/.github/workflows/main.yml
index e3ebb322d1f..0756bb2fed5 100644
--- a/examples/next-prisma-starter/.github/workflows/main.yml
+++ b/examples/next-prisma-starter/.github/workflows/main.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        node: ['16.x']
+        node: ['18.x']
         os: [ubuntu-latest]
     steps:
       - name: Checkout repo
diff --git a/examples/next-prisma-starter/package.json b/examples/next-prisma-starter/package.json
index cd992ada6b7..74dad11e5b0 100644
--- a/examples/next-prisma-starter/package.json
+++ b/examples/next-prisma-starter/package.json
@@ -26,8 +26,8 @@
     "test": "run-s test:*",
     "test:unit": "vitest run",
     "test:e2e": "playwright test",
-    "test-dev": "start-server-and-test 'next dev' 3000 test",
-    "test-start": "start-server-and-test start 3000 test",
+    "test-dev": "start-server-and-test 'next dev' http://127.0.0.1:3000 test",
+    "test-start": "start-server-and-test start http://127.0.0.1:3000 test",
     "postinstall": "prisma generate"
   },
   "prisma": {
@@ -76,4 +76,4 @@
   "publishConfig": {
     "access": "restricted"
   }
-}
+}
\ No newline at end of file
diff --git a/examples/next-prisma-starter/src/utils/trpc.ts b/examples/next-prisma-starter/src/utils/trpc.ts
index bf282ba3091..a8b3c224278 100644
--- a/examples/next-prisma-starter/src/utils/trpc.ts
+++ b/examples/next-prisma-starter/src/utils/trpc.ts
@@ -22,7 +22,7 @@ function getBaseUrl() {
   }
 
   // assume localhost
-  return `http://localhost:${process.env.PORT ?? 3000}`;
+  return `http://127.0.0.1:${process.env.PORT ?? 3000}`;
 }
 
 /**
diff --git a/examples/next-prisma-todomvc/package.json b/examples/next-prisma-todomvc/package.json
index 5fc0c405d2f..10f49c39a9a 100644
--- a/examples/next-prisma-todomvc/package.json
+++ b/examples/next-prisma-todomvc/package.json
@@ -21,8 +21,8 @@
     "migrate-dev": "prisma migrate dev",
     "migrate": "prisma migrate deploy",
     "test": "playwright test",
-    "test-dev": "start-server-and-test 'next dev' 3000 test",
-    "test-start": "start-server-and-test start 3000 test",
+    "test-dev": "start-server-and-test 'next dev' http://127.0.0.1:3000 test",
+    "test-start": "start-server-and-test start http://127.0.0.1:3000 test",
     "postinstall": "prisma generate"
   },
   "dependencies": {
@@ -54,4 +54,4 @@
   "publishConfig": {
     "access": "restricted"
   }
-}
+}
\ No newline at end of file
diff --git a/examples/next-prisma-websockets-starter/.github/workflows/main.yml b/examples/next-prisma-websockets-starter/.github/workflows/main.yml
index e3ebb322d1f..0756bb2fed5 100644
--- a/examples/next-prisma-websockets-starter/.github/workflows/main.yml
+++ b/examples/next-prisma-websockets-starter/.github/workflows/main.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        node: ['16.x']
+        node: ['18.x']
         os: [ubuntu-latest]
     steps:
       - name: Checkout repo