diff --git a/pkgs/development/ocaml-modules/eigen/default.nix b/pkgs/development/ocaml-modules/eigen/default.nix
index 7c1ec79f7da3..8f26213c23ae 100644
--- a/pkgs/development/ocaml-modules/eigen/default.nix
+++ b/pkgs/development/ocaml-modules/eigen/default.nix
@@ -1,17 +1,17 @@
-{ stdenv, buildDunePackage, fetchFromGitHub, ctypes }:
+{ stdenv, buildDune2Package, fetchFromGitHub, ctypes }:
 
-buildDunePackage rec {
+buildDune2Package rec {
   pname = "eigen";
-  version = "0.1.5";
+  version = "0.2.0";
 
   src = fetchFromGitHub {
     owner = "owlbarn";
     repo   = pname;
     rev    = version;
-    sha256 = "0pbqd87i9h7qpx84hr8k4iw0rhmjgma4s3wihxh992jjvsrgdyfi";
+    sha256 = "1zaw03as14hyvfpyj6bjrfbcxp2ljdbqcqqgm53kms244mig425f";
   };
 
-  minimumOCamlVersion = "4.04";
+  minimumOCamlVersion = "4.02";
 
   propagatedBuildInputs = [ ctypes ];
 
diff --git a/pkgs/development/ocaml-modules/owl-base/default.nix b/pkgs/development/ocaml-modules/owl-base/default.nix
index 12cd54363085..ce6ee124466c 100644
--- a/pkgs/development/ocaml-modules/owl-base/default.nix
+++ b/pkgs/development/ocaml-modules/owl-base/default.nix
@@ -1,14 +1,14 @@
-{ stdenv, buildDunePackage, fetchFromGitHub, stdlib-shims }:
+{ stdenv, buildDune2Package, fetchFromGitHub, stdlib-shims }:
 
-buildDunePackage rec {
+buildDune2Package rec {
   pname = "owl-base";
-  version = "0.7.2";
+  version = "0.8.0";
 
   src = fetchFromGitHub {
     owner  = "owlbarn";
     repo   = "owl";
     rev    = version;
-    sha256 = "1a2lbhywrb3bmm4k48wwbp6iszpd3aj1f23v10i78cbqm5slk6dj";
+    sha256 = "1j3xmr4izfznmv8lbn8vkx9c77py2xr6fqyn6ypjlf5k9b8g4mmw";
   };
 
   propagatedBuildInputs = [ stdlib-shims ];
diff --git a/pkgs/development/ocaml-modules/owl/default.nix b/pkgs/development/ocaml-modules/owl/default.nix
index 0cc1c1db42a4..c6eaf69b704b 100644
--- a/pkgs/development/ocaml-modules/owl/default.nix
+++ b/pkgs/development/ocaml-modules/owl/default.nix
@@ -1,14 +1,26 @@
-{ stdenv, buildDunePackage, fetchFromGitHub, alcotest
-, eigen, stdio, stdlib-shims, openblasCompat, owl-base
+{ stdenv
+, buildDune2Package
+, dune-configurator
+, fetchFromGitHub
+, alcotest
+, eigen
+, stdio
+, stdlib-shims
+, openblasCompat
+, owl-base
+, npy
 }:
 
-buildDunePackage rec {
+buildDune2Package rec {
   pname = "owl";
 
   inherit (owl-base) version src meta;
 
   checkInputs = [ alcotest ];
-  propagatedBuildInputs = [ eigen stdio stdlib-shims openblasCompat owl-base ];
+  buildInputs = [ dune-configurator ];
+  propagatedBuildInputs = [
+    eigen stdio stdlib-shims openblasCompat owl-base npy
+  ];
 
   doCheck = !stdenv.isDarwin;  # https://github.com/owlbarn/owl/issues/462
 }
diff --git a/pkgs/development/ocaml-modules/phylogenetics/default.nix b/pkgs/development/ocaml-modules/phylogenetics/default.nix
index e665a3235788..049a9a97c8e2 100644
--- a/pkgs/development/ocaml-modules/phylogenetics/default.nix
+++ b/pkgs/development/ocaml-modules/phylogenetics/default.nix
@@ -1,7 +1,7 @@
-{ stdenv, buildDunePackage, fetchFromGitHub, ppx_deriving
+{ stdenv, buildDune2Package, fetchFromGitHub, ppx_deriving
 , alcotest, biocaml, gnuplot, lacaml, menhir, owl }:
 
-buildDunePackage rec {
+buildDune2Package rec {
   pname = "phylogenetics";
   version = "unstable-2019-11-15";
 
@@ -20,7 +20,7 @@ buildDunePackage rec {
   doCheck = false;  # many tests require bppsuite
 
   meta = with stdenv.lib; {
-    inherit (std.meta) homepage;
+    inherit (src.meta) homepage;
     description = "Bioinformatics library for Ocaml";
     maintainers = [ maintainers.bcdarwin ];
     license = licenses.cecill-b;