diff --git a/.gitignore b/.gitignore
index 8f1ec4a..9baaa67 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,3 +14,4 @@ _debug/
 sx-haskell/
 sx-rust/
 shared/static/scripts/sx-full-test.js
+hosts/ocaml/_build/