diff --git a/tests/e2e/tests/build/server-rendering/express-engine-csp-nonce.ts b/tests/e2e/tests/build/server-rendering/express-engine-csp-nonce.ts
index 409b141bb48a..4bcd1ecd75eb 100644
--- a/tests/e2e/tests/build/server-rendering/express-engine-csp-nonce.ts
+++ b/tests/e2e/tests/build/server-rendering/express-engine-csp-nonce.ts
@@ -61,7 +61,7 @@ export default async function () {
       {
         ...process.env,
         'PORT': String(port),
-        'NG_ALLOWED_HOSTS': 'localhost',
+        'NG_ALLOWED_HOSTS': `localhost:${port}`,
       },
     );
 
diff --git a/tests/e2e/tests/build/server-rendering/express-engine-ngmodule.ts b/tests/e2e/tests/build/server-rendering/express-engine-ngmodule.ts
index 5eaaa9b0e58b..50f2b8701310 100644
--- a/tests/e2e/tests/build/server-rendering/express-engine-ngmodule.ts
+++ b/tests/e2e/tests/build/server-rendering/express-engine-ngmodule.ts
@@ -83,7 +83,7 @@ export default async function () {
       {
         ...process.env,
         'PORT': String(port),
-        'NG_ALLOWED_HOSTS': 'localhost',
+        'NG_ALLOWED_HOSTS': `localhost:${port}`,
       },
     );
 
diff --git a/tests/e2e/tests/build/server-rendering/express-engine-standalone.ts b/tests/e2e/tests/build/server-rendering/express-engine-standalone.ts
index 4c8d29d9b770..5289bb19be0b 100644
--- a/tests/e2e/tests/build/server-rendering/express-engine-standalone.ts
+++ b/tests/e2e/tests/build/server-rendering/express-engine-standalone.ts
@@ -50,7 +50,7 @@ export default async function () {
       {
         ...process.env,
         'PORT': String(port),
-        'NG_ALLOWED_HOSTS': 'localhost',
+        'NG_ALLOWED_HOSTS': `localhost:${port}`,
       },
     );
 
diff --git a/tests/e2e/tests/build/server-rendering/server-routes-output-mode-server-i18n-base-href.ts b/tests/e2e/tests/build/server-rendering/server-routes-output-mode-server-i18n-base-href.ts
index aa6f7e3426ee..e06187f4c7c3 100644
--- a/tests/e2e/tests/build/server-rendering/server-routes-output-mode-server-i18n-base-href.ts
+++ b/tests/e2e/tests/build/server-rendering/server-routes-output-mode-server-i18n-base-href.ts
@@ -111,7 +111,7 @@ async function spawnServer(): Promise<number> {
     {
       ...process.env,
       'PORT': String(port),
-      'NG_ALLOWED_HOSTS': 'localhost',
+      'NG_ALLOWED_HOSTS': `localhost:${port}`,
     },
   );
 
diff --git a/tests/e2e/tests/build/server-rendering/server-routes-output-mode-server-i18n-sub-path.ts b/tests/e2e/tests/build/server-rendering/server-routes-output-mode-server-i18n-sub-path.ts
index 7bc323311b4f..a31507032f4a 100644
--- a/tests/e2e/tests/build/server-rendering/server-routes-output-mode-server-i18n-sub-path.ts
+++ b/tests/e2e/tests/build/server-rendering/server-routes-output-mode-server-i18n-sub-path.ts
@@ -146,7 +146,7 @@ async function spawnServer(): Promise<number> {
     {
       ...process.env,
       'PORT': String(port),
-      'NG_ALLOWED_HOSTS': 'localhost',
+      'NG_ALLOWED_HOSTS': `localhost:${port}`,
     },
   );
 
diff --git a/tests/e2e/tests/build/server-rendering/server-routes-output-mode-server-i18n.ts b/tests/e2e/tests/build/server-rendering/server-routes-output-mode-server-i18n.ts
index efbff9871bbc..768c384ad126 100644
--- a/tests/e2e/tests/build/server-rendering/server-routes-output-mode-server-i18n.ts
+++ b/tests/e2e/tests/build/server-rendering/server-routes-output-mode-server-i18n.ts
@@ -122,7 +122,7 @@ async function spawnServer(): Promise<number> {
     {
       ...process.env,
       'PORT': String(port),
-      'NG_ALLOWED_HOSTS': 'localhost',
+      'NG_ALLOWED_HOSTS': `localhost:${port}`,
     },
   );
 
diff --git a/tests/e2e/tests/build/server-rendering/server-routes-output-mode-server.ts b/tests/e2e/tests/build/server-rendering/server-routes-output-mode-server.ts
index ff72cb8e8df2..b3eb7c173605 100644
--- a/tests/e2e/tests/build/server-rendering/server-routes-output-mode-server.ts
+++ b/tests/e2e/tests/build/server-rendering/server-routes-output-mode-server.ts
@@ -206,7 +206,7 @@ async function spawnServer(): Promise<number> {
     {
       ...process.env,
       'PORT': String(port),
-      'NG_ALLOWED_HOSTS': 'localhost',
+      'NG_ALLOWED_HOSTS': `localhost:${port}`,
     },
   );
 
diff --git a/tests/e2e/tests/build/server-rendering/server-routes-preload-links.ts b/tests/e2e/tests/build/server-rendering/server-routes-preload-links.ts
index 4094ee4351b9..f44d5052565e 100644
--- a/tests/e2e/tests/build/server-rendering/server-routes-preload-links.ts
+++ b/tests/e2e/tests/build/server-rendering/server-routes-preload-links.ts
@@ -215,7 +215,7 @@ async function spawnServer(): Promise<number> {
     {
       ...process.env,
       'PORT': String(port),
-      'NG_ALLOWED_HOSTS': 'localhost',
+      'NG_ALLOWED_HOSTS': `localhost:${port}`,
     },
   );