diff --git a/src/hbbr.rs b/src/hbbr.rs
index 00a4f83..d7f7932 100644
--- a/src/hbbr.rs
+++ b/src/hbbr.rs
@@ -29,9 +29,18 @@ fn main() -> ResultType<()> {
             section.iter().for_each(|(k, v)| std::env::set_var(k, v));
         }
     }
+    let mut port = RELAY_PORT;
+    if let Ok(v) = std::env::var("PORT") {
+        let v: i32 = v.parse().unwrap_or_default();
+        if v > 0 {
+            port = v + 1;
+        }
+    }
     start(
-        matches.value_of("port").unwrap_or(&RELAY_PORT.to_string()),
-        matches.value_of("key").unwrap_or(""),
+        matches.value_of("port").unwrap_or(&port.to_string()),
+        matches
+            .value_of("key")
+            .unwrap_or(&std::env::var("KEY").unwrap_or_default()),
     )?;
     Ok(())
 }
diff --git a/src/version.rs b/src/version.rs
deleted file mode 100644
index 6cf4a19..0000000
--- a/src/version.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-pub const VERSION: &str = "1.1.7";
-#[allow(dead_code)]
-pub const BUILD_DATE: &str = "2023-02-01 10:45";