diff --git a/.env b/.env
new file mode 100644
index 0000000..0f07082
--- /dev/null
+++ b/.env
@@ -0,0 +1,2 @@
+PORT=13000
+API_VERSION=1
diff --git a/Cargo.lock b/Cargo.lock
index f178db2..361eded 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -165,6 +165,12 @@ version = "0.8.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "06ea2b9bc92be3c2baa9334a323ebca2d6f074ff852cd1d7b11064035cd3868f"
 
+[[package]]
+name = "dotenvy"
+version = "0.15.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1aaf95b3e5c8f23aa320147307562d361db0ae0d51242340f558153b4eb2439b"
+
 [[package]]
 name = "encoding_rs"
 version = "0.8.33"
@@ -326,6 +332,7 @@ name = "hik-push-bot"
 version = "0.1.0"
 dependencies = [
  "axum",
+ "dotenvy",
  "reqwest",
  "serde",
  "serde_json",
diff --git a/Cargo.toml b/Cargo.toml
index 3c544c6..299928c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,3 +12,4 @@ tokio = { version = "1.35.1", features = ["full"] }
 tower = "0.4.13"
 serde = { version = "1.0.195", features = ["derive"] }
 serde_json = "1.0.111"
+dotenvy = "0.15.7"
diff --git a/src/main.rs b/src/main.rs
index 725f411..19b7c2f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,8 +1,10 @@
+use std::env;
 use axum::http::StatusCode;
 use axum::{
     routing::{get, post},
     Json, Router,
 };
+use dotenvy::dotenv;
 use serde_json::Value;
 
 use crate::event_type::get_event_type_map;
@@ -41,14 +43,17 @@ async fn event_rcv_handle_v2(
 
 #[tokio::main]
 async fn main() {
+    // load environment variables from .env file
+    dotenv().expect(".env file not found");
+    let port = env::var("PORT").expect("PORT is not set in .env file");
+
     // build our application with a single route
     let app = Router::new()
         .route("/", get(|| async { "Hello, World!" }))
-        .route("/eventRcv", post(event_rcv_handle))
-        .route("/eventRcv2", post(event_rcv_handle_v2));
+        .route("/eventRcv", post(event_rcv_handle_v2));
 
     // run our app with hyper, listening globally on port 3000
-    let listener = tokio::net::TcpListener::bind("0.0.0.0:13000")
+    let listener = tokio::net::TcpListener::bind(format!("0.0.0.0:{}", port))
         .await
         .unwrap();
     axum::serve(listener, app).await.unwrap();