diff --git a/pkgs/development/ocaml-modules/ocamlgraph/default.nix b/pkgs/development/ocaml-modules/ocamlgraph/default.nix
index 39fbf2d8a534..c075fc59be1c 100644
--- a/pkgs/development/ocaml-modules/ocamlgraph/default.nix
+++ b/pkgs/development/ocaml-modules/ocamlgraph/default.nix
@@ -2,23 +2,21 @@
 
 buildDunePackage rec {
   pname = "ocamlgraph";
-  version = "2.0.0";
+  version = "2.1.0";
 
   src = fetchurl {
     url = "https://github.com/backtracking/ocamlgraph/releases/download/${version}/ocamlgraph-${version}.tbz";
-    sha256 = "029692bvdz3hxpva9a2jg5w5381fkcw55ysdi8424lyyjxvjdzi0";
+    hash = "sha256-D5YsNvklPfI5OVWvQbB0tqQmsvkqne95WyAFtX0wLWU=";
   };
 
-  minimalOCamlVersion = "4.03";
-  useDune2 = true;
+  minimalOCamlVersion = "4.08";
 
   propagatedBuildInputs = [
     stdlib-shims
   ];
 
   meta = with lib; {
-      homepage = "http://ocamlgraph.lri.fr/";
-      downloadPage = "https://github.com/backtracking/ocamlgraph";
+      homepage = "https://github.com/backtracking/ocamlgraph";
       description = "Graph library for OCaml";
       license = licenses.gpl2Oss;
       maintainers = with maintainers; [ ];
diff --git a/pkgs/development/ocaml-modules/ocamlgraph/gtk.nix b/pkgs/development/ocaml-modules/ocamlgraph/gtk.nix
index 1aa438ffa448..e8167356f939 100644
--- a/pkgs/development/ocaml-modules/ocamlgraph/gtk.nix
+++ b/pkgs/development/ocaml-modules/ocamlgraph/gtk.nix
@@ -2,7 +2,7 @@
 
 buildDunePackage rec {
   pname = "ocamlgraph_gtk";
-  inherit (ocamlgraph) version src useDune2 meta;
+  inherit (ocamlgraph) version src meta;
 
   propagatedBuildInputs = [
     lablgtk