diff --git a/pkgs/development/ocaml-modules/bz2/default.nix b/pkgs/development/ocaml-modules/bz2/default.nix
new file mode 100644
index 000000000000..7de24c134629
--- /dev/null
+++ b/pkgs/development/ocaml-modules/bz2/default.nix
@@ -0,0 +1,38 @@
+{ lib, stdenv, fetchFromGitLab, ocaml, findlib, bzip2, autoreconfHook }:
+
+if !lib.versionAtLeast ocaml.version "4.02"
+then throw "bz2 is not available for OCaml ${ocaml.version}"
+else
+
+stdenv.mkDerivation rec {
+  pname = "ocaml${ocaml.version}-bz2";
+  version = "0.7.0";
+
+  src = fetchFromGitLab {
+    owner = "irill";
+    repo = "camlbz2";
+    rev = version;
+    sha256 = "sha256-jBFEkLN2fbC3LxTu7C0iuhvNg64duuckBHWZoBxrV/U=";
+  };
+
+  autoreconfFlags = "-I .";
+
+  nativeBuildInputs = [
+    autoreconfHook
+  ];
+
+  buildInputs = [
+    ocaml
+    findlib
+    bzip2
+  ];
+
+  preInstall = "mkdir -p $OCAMLFIND_DESTDIR/stublibs";
+
+  meta = with lib; {
+    description = "OCaml bindings for the libbz2 (AKA, bzip2) (de)compression library";
+    downloadPage = "https://gitlab.com/irill/camlbz2";
+    license = licenses.lgpl21;
+    maintainers = with maintainers; [ superherointj ];
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 92894bf7a3bb..4feaf9f6f74e 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -80,6 +80,8 @@ let
 
     bos = callPackage ../development/ocaml-modules/bos { };
 
+    bz2 = callPackage ../development/ocaml-modules/bz2 { };
+
     ca-certs = callPackage ../development/ocaml-modules/ca-certs { };
 
     ca-certs-nss = callPackage ../development/ocaml-modules/ca-certs-nss { };