diff --git a/pkgs/development/ocaml-modules/h2/default.nix b/pkgs/development/ocaml-modules/h2/default.nix
index 1a8d0c5d6395..5ec66ae9235e 100644
--- a/pkgs/development/ocaml-modules/h2/default.nix
+++ b/pkgs/development/ocaml-modules/h2/default.nix
@@ -30,9 +30,6 @@ buildDunePackage rec {
     src
     ;
 
-  duneVersion = "3";
-  minimalOCamlVersion = "4.06";
-
   propagatedBuildInputs = [
     angstrom
     faraday
@@ -42,8 +39,7 @@ buildDunePackage rec {
     httpaf
   ];
 
-  # Tests fail with ≤ 4.07
-  doCheck = lib.versionAtLeast ocaml.version "4.08";
+  doCheck = true;
   preCheck = ''
     ln -s "${http2-frame-test-case}" lib_test/http2-frame-test-case
   '';
diff --git a/pkgs/development/ocaml-modules/hpack/default.nix b/pkgs/development/ocaml-modules/hpack/default.nix
index 20a0456d7449..3b8057bf81c8 100644
--- a/pkgs/development/ocaml-modules/hpack/default.nix
+++ b/pkgs/development/ocaml-modules/hpack/default.nix
@@ -7,14 +7,13 @@
 
 buildDunePackage rec {
   pname = "hpack";
-  version = "0.10.0";
+  version = "0.11.0";
 
   src = fetchurl {
     url = "https://github.com/anmonteiro/ocaml-h2/releases/download/${version}/h2-${version}.tbz";
-    hash = "sha256-n9avpVL6HD2KBON2FpnUeuH3HOUDOA29iSmjdcxMRvE=";
+    hash = "sha256-GdXwazlgDurjzy7ekLpuMkCii8W+F/jl/IBv/WTHgFM=";
   };
 
-  duneVersion = "3";
   minimalOCamlVersion = "4.08";
 
   propagatedBuildInputs = [