diff --git a/src/main.rs b/src/main.rs
index 05aa644..ec168ab 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -13,7 +13,7 @@ use std::{
 use argparse::{ArgumentParser, StoreTrue, Store};
 use rust_util::*;
 
-const VERSION: &str = "0.1";
+const VERSION: &str = env!("CARGO_PKG_VERSION");
 
 fn print_version() {
     print!(r#"finding {}