diff --git a/src/lib.rs b/src/lib.rs
index b2446b3..9d72b03 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -127,6 +127,7 @@ impl ResourcesGenerator {
     }
 }
 
+#[derive(Default)]
 pub struct Resource {
     source: PathBuf,
     mount_at: Option<ResourceMount>,