diff --git a/README.md b/README.md
index 33e6043a..825477dc 100644
--- a/README.md
+++ b/README.md
@@ -65,6 +65,12 @@ ADMIN_USERNAME: "admin"
 ADMIN_PASSWORD: "password"
 ```
 
+If you use Google Analytics, set the tracking:
+
+```yml
+GOOGLE_TRACKING_ID: "UA-12345678-1"
+```
+
 Run doccano:
 
 ```bash
diff --git a/docker-compose.prod.yml b/docker-compose.prod.yml
index 5e7310ac..63bb2f3c 100644
--- a/docker-compose.prod.yml
+++ b/docker-compose.prod.yml
@@ -23,6 +23,8 @@ services:
     build: ./frontend
     volumes:
       - www:/app/dist
+    environment:
+      GOOGLE_TRACKING_ID: ""
 
   nginx:
     build: ./nginx
diff --git a/frontend/nuxt.config.js b/frontend/nuxt.config.js
index d20b8393..0eec36e7 100644
--- a/frontend/nuxt.config.js
+++ b/frontend/nuxt.config.js
@@ -63,7 +63,7 @@ export default {
 
   buildModules: [
     ['@nuxtjs/google-analytics', {
-      id: 'UA-125643874-2'
+      id: process.env.GOOGLE_TRACKING_ID
     }]
   ],
   /*