diff --git a/main.cpp b/main.cpp
index 6cd0268..78fe743 100644
--- a/main.cpp
+++ b/main.cpp
@@ -2,5 +2,6 @@
 
 int main(int argc, char const *argv[]) {
     std::cout << "hello, bilby." << std::endl;
+    std::cout << "add change log." << std::endl;
     return 0;
 }