diff --git a/src/protocol/mod.rs b/src/protocol/mod.rs
index 94c743fbabfdc823d4619417d0a7897909e944a7..81973bff7792a6fe583d7f2c8fce163993217622 100644
--- a/src/protocol/mod.rs
+++ b/src/protocol/mod.rs
@@ -1,5 +1,5 @@
 mod arena;
-mod eval;
+pub(crate) mod eval;
 pub(crate) mod input_source;
 mod parser;
 #[cfg(test)] mod tests;