diff --git a/src/main.rs b/src/main.rs
index e14f9546..02058805 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -174,7 +174,7 @@ async fn main() -> std::io::Result<()> {
 
         app
     })
-    .bind((args.hostname.as_str(), args.port))?;
+    .bind(format!("{}:{}", args.hostname.as_str(), args.port))?;
 
     println!(
         "🚀 Start serving requests at http://{}:{}\n",