diff --git a/src/runtime2/mod.rs b/src/runtime2/mod.rs
index 6ec88c480c45afdf81dd51a0bf1bc7810fc2bc4e..e5a3b8eb2fba77ff1fb0480a18e6aad656c5d425 100644
--- a/src/runtime2/mod.rs
+++ b/src/runtime2/mod.rs
@@ -7,4 +7,8 @@ mod scheduler;
 
 pub use runtime::Runtime;
 pub(crate) use scheduler::SchedulerCtx;
-pub(crate) use communication::{Message, ControlMessage, SyncMessage, DataMessage};
\ No newline at end of file
+pub(crate) use communication::{
+    PortId, PortKind, PortState,
+    Message, ControlMessage, SyncMessage, DataMessage,
+    SyncRoundDecision
+};
\ No newline at end of file