diff --git a/pkgs/development/ocaml-modules/reperf/default.nix b/pkgs/development/ocaml-modules/reperf/default.nix
new file mode 100644
index 000000000000..bcae9dc695cf
--- /dev/null
+++ b/pkgs/development/ocaml-modules/reperf/default.nix
@@ -0,0 +1,41 @@
+{ buildDunePackage, fetchFromGitHub, lib, printbox-text, reason }:
+
+buildDunePackage rec {
+  pname = "reperf";
+  version = "1.5.1";
+
+  src = fetchFromGitHub {
+    owner = "bryphe";
+    repo = "reperf";
+    rev = "68ef2f96899c09e6ac7d929b0375f7a806aee067";
+    sha256 = "sha256-ASujTsH4eDAYLNalB9Xt1p3C8x+FI0kMldZBYaXMCWc=";
+  };
+
+  postPatch = ''
+    substituteInPlace src/dune --replace "printbox" "printbox-text"
+  '';
+
+  nativeBuildInputs = [ reason ];
+
+  buildInputs = [
+    printbox-text
+  ];
+
+  meta = with lib; {
+    description = "Native Reason + JSOO cross-platform performance benchmarking tools";
+    longDescription = ''
+      Inspired by the core_bench tools from Janestreet.
+
+      reperf helps with:
+      * Timing: time spent in a code block
+      * Call count: frequency of code-path calls
+      * Allocations: code-block impact to garbage collector
+
+      Supports benchmarks, which are test cases that exercise performance scenarios.
+      Outputs a JSON performance report, and compare it with previous iterations - and fail if a regression is detected.
+    '';
+    homepage = "https://github.com/bryphe/reperf";
+    maintainers = with maintainers; [ superherointj ];
+    license = licenses.mit;
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 4601739d4fef..138cf3ca8578 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -1268,6 +1268,8 @@ let
 
     rebez = callPackage ../development/ocaml-modules/rebez { };
 
+    reperf = callPackage ../development/ocaml-modules/reperf { };
+
     rfc7748 = callPackage ../development/ocaml-modules/rfc7748 { };
 
     ezresto = callPackage ../development/ocaml-modules/resto/ezresto.nix { };