diff --git a/dune-project b/dune-project
index 131199e..2c8ef49 100644
--- a/dune-project
+++ b/dune-project
@@ -1,4 +1,4 @@
-(lang dune 2.1)
+(lang dune 2.7)
 (name graphics)
 
 (generate_opam_files true)
diff --git a/graphics.opam b/graphics.opam
index 5422238..53e8855 100644
--- a/graphics.opam
+++ b/graphics.opam
@@ -17,14 +17,15 @@ homepage: "https://github.com/ocaml/graphics"
 doc: "https://ocaml.github.io/graphics/"
 bug-reports: "https://github.com/ocaml/graphics/issues"
 depends: [
-  "dune" {>= "2.1"}
+  "dune" {>= "2.7"}
   "dune-configurator"
   "conf-libX11" {os != "win32"}
   "conf-pkg-config" {os != "win32"}
   "ocaml" {>= "4.09.0~~"}
+  "odoc" {with-doc}
 ]
 build: [
-  ["dune" "subst"] {pinned}
+  ["dune" "subst"] {dev}
   [
     "dune"
     "build"