diff --git a/.env.development b/.env.development
index 065be6f..898b100 100644
--- a/.env.development
+++ b/.env.development
@@ -6,5 +6,5 @@ BOT_HEALTH_PORT=8081
 BOT_LOG_LEVEL=debug
 SEED_OPERATOR_TELEGRAM_ID=818380985
 SEED_OPERATOR_NAME="yiekheng (dev)"
-WEB_PORT=3000
+WEB_PORT=8100
 AUTH_SECRET=86f656580a58f03b6ccb43d257e0e801ecd5356e042e8886b3c7c569e29ff13c
diff --git a/docker-compose.dev.yml b/docker-compose.dev.yml
index 65ab7de..8a73ca5 100644
--- a/docker-compose.dev.yml
+++ b/docker-compose.dev.yml
@@ -49,7 +49,7 @@ services:
       - .:/app
       - ./dev-data:/data
     ports:
-      - "127.0.0.1:3000:3000"
+      - "127.0.0.1:${WEB_PORT}:3000"
     environment:
       NODE_ENV: development
       DATABASE_URL: ${DATABASE_URL}
diff --git a/envs/.env.example b/envs/.env.example
index fd6bf4a..4ca0186 100644
--- a/envs/.env.example
+++ b/envs/.env.example
@@ -15,5 +15,5 @@ SEED_OPERATOR_TELEGRAM_ID=
 SEED_OPERATOR_NAME=Operator
 
 # === Web (placeholder for plan 3) ===
-WEB_PORT=3000
+WEB_PORT=8100
 AUTH_SECRET=