diff --git a/pkgs/development/ocaml-modules/seqes/default.nix b/pkgs/development/ocaml-modules/seqes/default.nix
new file mode 100644
index 000000000000..04bed64ac649
--- /dev/null
+++ b/pkgs/development/ocaml-modules/seqes/default.nix
@@ -0,0 +1,19 @@
+{ lib, fetchurl, buildDunePackage, qcheck, qcheck-alcotest, alcotest }:
+
+buildDunePackage rec {
+  pname = "seqes";
+  version = "0.2";
+  src = fetchurl {
+    url = "https://gitlab.com/nomadic-labs/seqes/-/archive/${version}/seqes-${version}.tar.gz";
+    sha256 = "sha256-IxLA0jaIPdX9Zn/GL8UHDJYjA1UBW6leGbZmp64YMjI=";
+  };
+
+  checkInputs = [ qcheck qcheck-alcotest alcotest ];
+
+  meta = with lib; {
+    description = "Variations of the Seq module with monads folded into the type";
+    homepage = "https://gitlab.com/nomadic-labs/seqes";
+    license = licenses.lgpl2; # Same as OCaml
+    maintainers = [ maintainers.ulrikstrid ];
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index d8c4a51505fc..e3ca1f79c57b 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -1513,6 +1513,8 @@ let
 
     seq = callPackage ../development/ocaml-modules/seq { };
 
+    seqes = callPackage ../development/ocaml-modules/seqes { };
+
     sha = callPackage ../development/ocaml-modules/sha { };
 
     shared-memory-ring = callPackage ../development/ocaml-modules/shared-memory-ring { };