diff --git a/src/command/build/walk_fs.rs b/src/command/build/walk_fs.rs
index 143e811..a214941 100644
--- a/src/command/build/walk_fs.rs
+++ b/src/command/build/walk_fs.rs
@@ -7,10 +7,10 @@ use tokio::fs::DirEntry;
 
 use crate::error::CustomError;
 
-pub(crate) fn walk_fs<P: AsRef<Path> + std::marker::Send + 'static>(
+pub(crate) fn walk_fs<'p, P: AsRef<Path> + std::marker::Send + 'p>(
     root: P,
     predicate: fn(&DirEntry) -> Result<bool, CustomError>,
-) -> BoxFuture<'static, Result<Vec<DirEntry>, CustomError>> {
+) -> BoxFuture<'p, Result<Vec<DirEntry>, CustomError>> {
     async move {
         let mut ret = Vec::new();
         let mut entries = tokio::fs::read_dir(root).await?;