diff --git a/tools/src/lib.rs b/tools/src/lib.rs
index 8196bd896..87f18cc2b 100644
--- a/tools/src/lib.rs
+++ b/tools/src/lib.rs
@@ -3,5 +3,6 @@ extern crate log;
 #[macro_use]
 pub mod xous_arguments;
 pub mod elf;
+pub mod sign_image;
 pub mod tags;
 pub mod utils;