diff --git a/pkgs/development/ocaml-modules/mem_usage/default.nix b/pkgs/development/ocaml-modules/mem_usage/default.nix
new file mode 100644
index 0000000000000..d1614481b737f
--- /dev/null
+++ b/pkgs/development/ocaml-modules/mem_usage/default.nix
@@ -0,0 +1,28 @@
+{
+  lib,
+  fetchFromGitHub,
+  buildDunePackage,
+}:
+
+buildDunePackage rec {
+  pname = "mem_usage";
+  version = "0.1.2";
+
+  src = fetchFromGitHub {
+    owner = "savonet";
+    repo = "ocaml-mem_usage";
+    rev = "v${version}";
+    hash = "sha256-bADBIIXe4Tg5HAd+s8/oieuwrZ/9/DA0RPHOWyib6p4=";
+  };
+
+  minimalOCamlVersion = "4.07";
+
+  doCheck = true;
+
+  meta = {
+    license = lib.licenses.mit;
+    homepage = "https://www.liquidsoap.info/ocaml-mem_usage/";
+    description = "Cross-platform memory usage information";
+    maintainers = [ lib.maintainers.vbgl ];
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index b22904c700803..6b07c01e45f1f 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -1085,6 +1085,8 @@ let
 
     memtrace = callPackage ../development/ocaml-modules/memtrace { };
 
+    mem_usage = callPackage ../development/ocaml-modules/mem_usage { };
+
     menhir = callPackage ../development/ocaml-modules/menhir { };
 
     menhirLib = callPackage ../development/ocaml-modules/menhir/lib.nix { };