diff --git a/package.json b/package.json
index 9c60653..469c2ca 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "version": "0.0.0",
   "scripts": {
     "ng": "ng",
-    "start": "concurrently \"ng serve\" \"json-server --watch db.json\"",
+    "start": "concurrently \"ng serve\" \"json-server -p 4000 --watch db.json\"",
     "build": "ng build",
     "watch": "ng build --watch --configuration development",
     "test": "ng test"
diff --git a/src/environments/environment.prod.ts b/src/environments/environment.prod.ts
index 3612073..59a78ac 100644
--- a/src/environments/environment.prod.ts
+++ b/src/environments/environment.prod.ts
@@ -1,3 +1,4 @@
 export const environment = {
-  production: true
+  production: true,
+  host: "http://localhost:3000"
 };
diff --git a/src/environments/environment.ts b/src/environments/environment.ts
index 345beb8..a686ea6 100644
--- a/src/environments/environment.ts
+++ b/src/environments/environment.ts
@@ -4,7 +4,7 @@
 
 export const environment = {
   production: false,
-  host: "http://localhost:3000"
+  host: "http://localhost:4000"
 };
 
 /*