diff --git a/src/lib.rs b/src/lib.rs
index 6c03257..14d6f0e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -14,7 +14,7 @@ use stammbaum::{Stammbaum, StammbaumFull};
 use std::io::BufReader;
 use tokio::runtime::Runtime;
 use tower_http::trace::TraceLayer;
-use tracing::{error, instrument, warn};
+use tracing::{error, info, instrument, warn};
 
 mod person;
 mod stammbaum;
@@ -74,7 +74,7 @@ async fn list_stammbaum(
     }
 }
 
-pub fn run() -> Result<(), String> {
+pub fn run<T: AsRef<str>>(address: T) -> Result<(), String> {
     let rt = Runtime::new().map_err(|e| e.to_string())?;
     rt.block_on(async {
         #[allow(clippy::expect_used)]
@@ -89,10 +89,12 @@ pub fn run() -> Result<(), String> {
             .layer(TraceLayer::new_for_http())
             .with_state(stammbaum);
 
-        let addr = tokio::net::TcpListener::bind("0.0.0.0:3000")
+        let addr = tokio::net::TcpListener::bind(address.as_ref())
             .await
             .expect("faild to bind port");
 
+        info!(address = address.as_ref(), "listening_on");
+
         serve(addr, app).await.map_err(|e| e.to_string())
     })
     .map_err(|e| e.to_string())?;
diff --git a/src/main.rs b/src/main.rs
index 655e873..58e38ff 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -9,5 +9,5 @@ fn main() {
                 .unwrap(),
         )
         .init();
-    run().unwrap();
+    run("0.0.0.0:3000").unwrap();
 }