diff --git a/build.rs b/build.rs
index b6fd75b..2f3a10d 100644
--- a/build.rs
+++ b/build.rs
@@ -1,6 +1,9 @@
 use shadow_rs::{BuildPattern, ShadowBuilder};
 
 fn main() {
+    println!("cargo::rerun-if-changed=bot.capnp");
+    println!("cargo::rerun-if-changed=user.capnp");
+
     capnpc::CompilerCommand::new()
         .file("bot.capnp")
         .file("user.capnp")