diff --git a/cmd/main.go b/cmd/main.go
index fee3048..1f7bc49 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -128,5 +128,5 @@ func main() {
 		w.Write(b)
 	})
 
-	http.ListenAndServe(":3000", nil)
+	http.ListenAndServe(":"+os.Getenv("PORT"), nil)
 }