diff --git a/OCaml.gitignore b/OCaml.gitignore
index da0b2042..a18e0840 100644
--- a/OCaml.gitignore
+++ b/OCaml.gitignore
@@ -21,3 +21,9 @@ setup.log
 
 # Merlin configuring file for Vim and Emacs
 .merlin
+
+# Dune generated files
+*.install
+
+# Local OPAM switch
+_opam/