diff --git a/.gitignore b/.gitignore
index 22f55ad..ca54d91 100644
--- a/.gitignore
+++ b/.gitignore
@@ -32,4 +32,7 @@ lerna-debug.log*
 !.vscode/settings.json
 !.vscode/tasks.json
 !.vscode/launch.json
-!.vscode/extensions.json
\ No newline at end of file
+!.vscode/extensions.json
+
+# environment variables
+.env
\ No newline at end of file
diff --git a/package.json b/package.json
index e0a88fc..aa5e755 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
   },
   "dependencies": {
     "@nestjs/common": "^9.0.0",
+    "@nestjs/config": "^2.3.1",
     "@nestjs/core": "^9.0.0",
     "@nestjs/platform-express": "^9.0.0",
     "reflect-metadata": "^0.1.13",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 912f531..7eef05c 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -3,6 +3,7 @@ lockfileVersion: 5.4
 specifiers:
   '@nestjs/cli': ^9.0.0
   '@nestjs/common': ^9.0.0
+  '@nestjs/config': ^2.3.1
   '@nestjs/core': ^9.0.0
   '@nestjs/platform-express': ^9.0.0
   '@nestjs/schematics': ^9.0.0
@@ -27,6 +28,7 @@ specifiers:
 
 dependencies:
   '@nestjs/common': 9.3.9_mnr6j2del53muneqly5h4y27ai
+  '@nestjs/config': 2.3.1_jrq2rdgfp2sx67wmylmrqliwxe
   '@nestjs/core': 9.3.9_q6agyr4hwia55oswpsa7zjxcpm
   '@nestjs/platform-express': 9.3.9_77foi4w27ghy47yutmnzv7krjy
   reflect-metadata: 0.1.13
@@ -337,6 +339,22 @@ packages:
       uid: 2.0.1
     dev: false
 
+  /@nestjs/config/2.3.1_jrq2rdgfp2sx67wmylmrqliwxe:
+    resolution: {integrity: sha512-Ckzel0NZ9CWhNsLfE1hxfDuxJuEbhQvGxSlmZ1/X8awjRmAA/g3kT6M1+MO1SHj1wMtPyUfd9WpwkiqFbiwQgA==}
+    peerDependencies:
+      '@nestjs/common': ^7.0.0 || ^8.0.0 || ^9.0.0
+      reflect-metadata: ^0.1.13
+      rxjs: ^6.0.0 || ^7.2.0
+    dependencies:
+      '@nestjs/common': 9.3.9_mnr6j2del53muneqly5h4y27ai
+      dotenv: 16.0.3
+      dotenv-expand: 10.0.0
+      lodash: 4.17.21
+      reflect-metadata: 0.1.13
+      rxjs: 7.8.0
+      uuid: 9.0.0
+    dev: false
+
   /@nestjs/core/9.3.9_q6agyr4hwia55oswpsa7zjxcpm:
     resolution: {integrity: sha512-9g1A1G9eirLXEpH21rc6dKb08zHc2+adhCRz8NW39hbejcsxxD72FApJzt4QBQAKvu862ixt/tdpStnFT7lOSw==}
     requiresBuild: true
@@ -1336,6 +1354,16 @@ packages:
       esutils: 2.0.3
     dev: true
 
+  /dotenv-expand/10.0.0:
+    resolution: {integrity: sha512-GopVGCpVS1UKH75VKHGuQFqS1Gusej0z4FyQkPdwjil2gNIv+LNsqBlboOzpJFZKVT95GkCyWJbBSdFEFUWI2A==}
+    engines: {node: '>=12'}
+    dev: false
+
+  /dotenv/16.0.3:
+    resolution: {integrity: sha512-7GO6HghkA5fYG9TYnNxi14/7K9f5occMlp3zXAuSxn7CKCxt9xbNWG7yF8hTCSUchlfWSe3uLmlPfigevRItzQ==}
+    engines: {node: '>=12'}
+    dev: false
+
   /eastasianwidth/0.2.0:
     resolution: {integrity: sha512-I88TYZWc9XiYHRQ4/3c5rjjfgkjhLyW2luGIheGERbNQ6OY7yTybanSpDXZa8y7VUP9YmDcYa+eyq4ca7iLqWA==}
     dev: true
@@ -2240,7 +2268,6 @@ packages:
 
   /lodash/4.17.21:
     resolution: {integrity: sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==}
-    dev: true
 
   /log-symbols/4.1.0:
     resolution: {integrity: sha512-8XPvpAA8uyhfteu8pIvQxpJZ7SYYdpUivZpGy6sFsBuKRY/7rQGavedeB8aK+Zkyq6upMFVL/9AW6vOYzfRyLg==}
@@ -3335,6 +3362,11 @@ packages:
     engines: {node: '>= 0.4.0'}
     dev: false
 
+  /uuid/9.0.0:
+    resolution: {integrity: sha512-MXcSTerfPa4uqyzStbRoTgt5XIe3x5+42+q1sDuy3R5MDk66URdLMOZe5aPX/SQd+kuYAh0FdP/pO28IkQyTeg==}
+    hasBin: true
+    dev: false
+
   /v8-compile-cache-lib/3.0.1:
     resolution: {integrity: sha512-wa7YjyUGfNZngI/vtK0UHAN+lgDCxBPCylVXGp0zu59Fz5aiGtNXaq3DhIov063MorB+VfufLh3JlF2KdTK3xg==}
     dev: true
diff --git a/src/app.module.ts b/src/app.module.ts
index ff03f64..85dbe34 100644
--- a/src/app.module.ts
+++ b/src/app.module.ts
@@ -1,7 +1,9 @@
 import { Module } from '@nestjs/common'
+import { ConfigModule } from '@nestjs/config'
+import config from 'src/common/configs/config'
 
 @Module({
-  imports: [],
+  imports: [ConfigModule.forRoot({ isGlobal: true, load: [config] })],
   controllers: [],
   providers: [],
 })
diff --git a/src/common/configs/config.interface.ts b/src/common/configs/config.interface.ts
new file mode 100644
index 0000000..a309819
--- /dev/null
+++ b/src/common/configs/config.interface.ts
@@ -0,0 +1,7 @@
+export interface Config {
+  nest: NestConfig
+}
+
+export interface NestConfig {
+  port: number
+}
diff --git a/src/common/configs/config.ts b/src/common/configs/config.ts
new file mode 100644
index 0000000..72a9e48
--- /dev/null
+++ b/src/common/configs/config.ts
@@ -0,0 +1,9 @@
+import type { Config } from './config.interface'
+
+const config: Config = {
+  nest: {
+    port: parseInt(process.env.PORT) || 3000,
+  },
+}
+
+export default (): Config => config