diff --git a/examples/custom-server/src/server.ts b/examples/custom-server/src/server.ts
index 26f7a33ff5..92991f56ca 100644
--- a/examples/custom-server/src/server.ts
+++ b/examples/custom-server/src/server.ts
@@ -38,6 +38,7 @@ const start = async (): Promise<void> => {
 
   const nextApp = next({
     dev: process.env.NODE_ENV !== 'production',
+    port: PORT,
   })
 
   const nextHandler = nextApp.getRequestHandler()
diff --git a/templates/ecommerce/src/server.ts b/templates/ecommerce/src/server.ts
index ffda62d264..e2a7469e61 100644
--- a/templates/ecommerce/src/server.ts
+++ b/templates/ecommerce/src/server.ts
@@ -42,6 +42,7 @@ const start = async (): Promise<void> => {
 
   const nextApp = next({
     dev: process.env.NODE_ENV !== 'production',
+    port: PORT,
   })
 
   const nextHandler = nextApp.getRequestHandler()
diff --git a/templates/website/src/server.ts b/templates/website/src/server.ts
index ffda62d264..e2a7469e61 100644
--- a/templates/website/src/server.ts
+++ b/templates/website/src/server.ts
@@ -42,6 +42,7 @@ const start = async (): Promise<void> => {
 
   const nextApp = next({
     dev: process.env.NODE_ENV !== 'production',
+    port: PORT,
   })
 
   const nextHandler = nextApp.getRequestHandler()