diff --git a/src/main.rs b/src/main.rs
index dadab76..bbf116f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -47,6 +47,7 @@ async fn main() {
         .ok()
         .and_then(|v| v.parse().ok())
         .unwrap();
+    let listen_port: String = env::var("PORT").ok().and_then(|v| v.parse().ok()).unwrap();
 
     let db_pool = PgPoolOptions::new()
         .max_connections(64)
@@ -66,8 +67,9 @@ async fn main() {
         .route("/version", get(version))
         .with_state(db_pool);
 
-    // run it with hyper on localhost:3003
-    let listener = tokio::net::TcpListener::bind("127.0.0.1:3003")
+    let mut bind_with = "127.0.0.1:".to_owned();
+    bind_with += &listen_port;
+    let listener = tokio::net::TcpListener::bind(bind_with)
         .await
         .unwrap();
     axum::serve(listener, app).await.unwrap();
diff --git a/systemd/kosyncrs.service b/systemd/kosyncrs.service
index b405332..1809f9a 100644
--- a/systemd/kosyncrs.service
+++ b/systemd/kosyncrs.service
@@ -12,6 +12,7 @@ Group=users
 WorkingDirectory=/home/myuser
 ExecStart=/usr/local/bin/kosyncrs
 Environment="PG_URL=postgresql://kosync:password@localhost/kosync"
+Environment="PORT=3003"
 Restart=always
 
 [Install]