diff --git a/src/runtime2/mod.rs b/src/runtime2/mod.rs
index 4eb25b841315eaafaa4f67f5c519212bc1067f9a..87580e13e35739b790cbf350113887171b757b3f 100644
--- a/src/runtime2/mod.rs
+++ b/src/runtime2/mod.rs
@@ -5,3 +5,4 @@ mod global_store;
 mod scheduler;
 
 #[cfg(test)] mod tests;
+mod inbox;