diff --git a/pkgs/development/ocaml-modules/parmap/default.nix b/pkgs/development/ocaml-modules/parmap/default.nix
new file mode 100644
index 00000000000..a37120b2496
--- /dev/null
+++ b/pkgs/development/ocaml-modules/parmap/default.nix
@@ -0,0 +1,20 @@
+{ lib, buildDunePackage, fetchzip }:
+
+buildDunePackage rec {
+  pname = "parmap";
+  version = "1.1";
+
+  src = fetchzip {
+    url = "https://github.com/rdicosmo/${pname}/releases/download/${version}/${pname}-${version}.tbz";
+    sha256 = "13ahqaga1palf0s0dll512cl7k43sllmwvw6r03y70kfmky1j114";
+  };
+
+  doCheck = true;
+
+  meta = with lib; {
+    description = "Library for multicore parallel programming";
+    homepage = "https://rdicosmo.github.io/parmap";
+    maintainers = [ maintainers.bcdarwin ];
+    license = licenses.lgpl2;
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index f90068e00eb..56ae90ae392 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -562,6 +562,8 @@ let
       then callPackage ../development/ocaml-modules/num {}
       else null;
 
+    parmap = callPackage ../development/ocaml-modules/parmap { };
+
     comparelib = callPackage ../development/ocaml-modules/comparelib { };
 
     core_extended_p4 = callPackage ../development/ocaml-modules/core_extended { };