build.rs: add rerun-if-changed

1 files changed, 1 insertions, 0 deletions

diff --git a/build.rs b/build.rs
index 632aa83b..c027a271 100644
--- a/build.rs
+++ b/build.rs
@@ -20,6 +20,7 @@
  */
 
 fn main() {
+    println!("cargo:rerun-if-changed=build.rs");
     #[cfg(feature = "cli-docs")]
     {
         const MANDOC_OPTS: &[&'static str] = &["-T", "utf8", "-I", "os=Generated by mandoc(1)"];