diff --git a/crates/binstalk-manifests/src/helpers.rs b/crates/binstalk-manifests/src/helpers.rs
index 029564c9..4b2f3f8e 100644
--- a/crates/binstalk-manifests/src/helpers.rs
+++ b/crates/binstalk-manifests/src/helpers.rs
@@ -1,7 +1,9 @@
 use std::{fs, io, path::Path};
 
-/// Returned file is readable and writable.
-pub(crate) fn create_if_not_exist(path: &Path) -> io::Result<fs::File> {
+use fs_lock::FileLock;
+
+/// Return exclusively locked file that is readable and writable.
+pub(crate) fn create_if_not_exist(path: &Path) -> io::Result<FileLock> {
     let mut options = fs::File::options();
     options.read(true).write(true);
 
@@ -10,4 +12,6 @@ pub(crate) fn create_if_not_exist(path: &Path) -> io::Result<fs::File> {
         .create_new(true)
         .open(path)
         .or_else(|_| options.open(path))
+        .and_then(FileLock::new_exclusive)
+        .map(|file_lock| file_lock.set_file_path(path))
 }