diff --git a/Cargo.lock b/Cargo.lock
index 3d16d4c..c7b3710 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -247,7 +247,7 @@ checksum = "384b8ab6d37215f3c5301a95a4accb5d64aa607f1fcb26a11b5303878451b4fe"
 
 [[package]]
 name = "pallet"
-version = "1.0.4"
+version = "1.0.5"
 dependencies = [
  "clap",
  "clap_complete",
diff --git a/src/app.rs b/src/app.rs
index d4c2362..65de1a0 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -283,6 +283,8 @@ fn build(mode: &Option<String>) -> std::io::Result<()> {
 
     child.wait()?;
 
+    std::fs::write(format!("target/{}/.build_hash", build_config.name), hash)?;
+
     let stop = start.elapsed();
 
     println!(
@@ -298,7 +300,7 @@ fn build(mode: &Option<String>) -> std::io::Result<()> {
 
 fn hash_src_tree() -> std::io::Result<String> {
     let mut hashes = String::new();
-    for entry in glob("src/").expect("a valid glob pattern") {
+    for entry in glob("src/**/*").expect("a valid glob pattern") {
         if let Ok(file) = entry {
             let text = std::fs::read_to_string(file)?;
             let hash = sha256::digest(text);