diff --git a/dev-ml/gapi-ocaml/gapi-ocaml-0.4.2.ebuild b/dev-ml/gapi-ocaml/gapi-ocaml-0.4.2-r1.ebuild
similarity index 97%
rename from dev-ml/gapi-ocaml/gapi-ocaml-0.4.2.ebuild
rename to dev-ml/gapi-ocaml/gapi-ocaml-0.4.2-r1.ebuild
index 3380c8279d..4abebaa300 100644
--- a/dev-ml/gapi-ocaml/gapi-ocaml-0.4.2.ebuild
+++ b/dev-ml/gapi-ocaml/gapi-ocaml-0.4.2-r1.ebuild
@@ -14,7 +14,7 @@ HOMEPAGE="
 SRC_URI="https://github.com/astrada/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"
 
 LICENSE="MIT"
-SLOT="0"
+SLOT="0/${PV}"
 KEYWORDS="~amd64"
 IUSE="ocamlopt test"