diff --git a/pkgs/development/ocaml-modules/mrmime/default.nix b/pkgs/development/ocaml-modules/mrmime/default.nix
new file mode 100644
index 000000000000..0121afc9bccd
--- /dev/null
+++ b/pkgs/development/ocaml-modules/mrmime/default.nix
@@ -0,0 +1,77 @@
+{ afl-persistent
+, alcotest
+, angstrom
+, base64
+, bigarray-compat
+, bigarray-overlap
+, bigstringaf
+, buildDunePackage
+, emile
+, fetchzip
+, fmt
+, fpath
+, hxd
+, ipaddr
+, jsonm
+, ke
+, lib
+, mirage-crypto-rng
+, pecu
+, prettym
+, ptime
+, rosetta
+, rresult
+, unstrctrd
+, uutf
+}:
+
+buildDunePackage rec {
+  pname = "mrmime";
+  version = "0.5.0";
+
+  src = fetchzip {
+    url = "https://github.com/mirage/mrmime/releases/download/v${version}/mrmime-v${version}.tbz";
+    sha256 = "14k67v0b39b8jq3ny2ymi8g8sqx2gd81mlzsjphdzdqnlx6fk716";
+  };
+
+  useDune2 = true;
+
+  buildInputs = [
+    afl-persistent
+    bigarray-compat
+    bigarray-overlap
+    bigstringaf
+    fpath
+    mirage-crypto-rng
+  ];
+
+  propagatedBuildInputs = [
+    angstrom
+    base64
+    emile
+    fmt
+    ipaddr
+    ke
+    pecu
+    prettym
+    ptime
+    rosetta
+    rresult
+    unstrctrd
+    uutf
+  ];
+
+  checkInputs = [
+    alcotest
+    hxd
+    jsonm
+  ];
+  doCheck = true;
+
+  meta = {
+    description = "Parser and generator of mail in OCaml";
+    license = lib.licenses.mit;
+    homepage = "https://github.com/mirage/mrmime";
+    maintainers = with lib.maintainers; [ superherointj ];
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index e298e78515ee..c9da008e8f5a 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -822,6 +822,8 @@ let
 
     mparser-pcre =  callPackage ../development/ocaml-modules/mparser/pcre.nix { };
 
+    mrmime = callPackage ../development/ocaml-modules/mrmime { };
+
     mtime =  callPackage ../development/ocaml-modules/mtime { };
 
     mustache =  callPackage ../development/ocaml-modules/mustache { };