diff --git a/src/simulator/crates/mc-ai/src/lib.rs b/src/simulator/crates/mc-ai/src/lib.rs
index bc50bde9..f4728d69 100644
--- a/src/simulator/crates/mc-ai/src/lib.rs
+++ b/src/simulator/crates/mc-ai/src/lib.rs
@@ -8,6 +8,7 @@
 pub mod evaluator;
 pub mod game_state;
 pub mod mcts;
+pub mod mcts_tree;
 
 pub use evaluator::ScoringWeights;
 pub use game_state::{