diff --git a/opam b/opam
index 3e8ed8000..e32b9a873 100644
--- a/opam
+++ b/opam
@@ -17,4 +17,4 @@ depends: [
   "ppx_core"
   "ppx_driver"
 ]
-available: [ ocaml-version >= "4.02.3" ]
+available: [ ocaml-version = "4.02.3" ]