diff --git a/ocaml/.gitignore b/ocaml/.gitignore
index cb0e4f7bec7..57120bb4574 100644
--- a/ocaml/.gitignore
+++ b/ocaml/.gitignore
@@ -92,6 +92,12 @@ META
 /debugger/debugger_parser.output
 /debugger/ocamldebug
 
+/debugger4/debugger_lexer.ml
+/debugger4/debugger_parser.ml
+/debugger4/debugger_parser.mli
+/debugger4/debugger_parser.output
+/debugger4/ocamldebug
+
 /emacs/ocamltags
 /emacs/*.elc