diff --git a/pkgs/development/ocaml-modules/brr/default.nix b/pkgs/development/ocaml-modules/brr/default.nix
new file mode 100644
index 00000000000..709a9b09292
--- /dev/null
+++ b/pkgs/development/ocaml-modules/brr/default.nix
@@ -0,0 +1,26 @@
+{ stdenv, lib, fetchurl
+, ocaml, findlib, ocamlbuild, topkg
+, js_of_ocaml-compiler
+, js_of_ocaml-toplevel
+, note
+}:
+
+stdenv.mkDerivation rec {
+  pname = "ocaml${ocaml.version}-brr";
+  version = "0.0.4";
+  src = fetchurl {
+    url = "https://erratique.ch/software/brr/releases/brr-${version}.tbz";
+    hash = "sha256-v+Ik1tdRBVnNDqhmNoJuLelL3k5OhxIsUorGdTb9sbw=";
+  };
+  buildInputs = [ ocaml findlib ocamlbuild topkg ];
+  propagatedBuildInputs = [ js_of_ocaml-compiler js_of_ocaml-toplevel note ];
+  inherit (topkg) buildPhase installPhase;
+
+  meta = {
+    homepage = "https://erratique.ch/software/brr";
+    description = "A toolkit for programming browsers in OCaml";
+    license = lib.licenses.isc;
+    maintainers = [ lib.maintainers.vbgl ];
+    inherit (ocaml.meta) platforms;
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index ba285a95a58..ee3b3ad21a1 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -98,6 +98,8 @@ let
 
     brisk-reconciler = callPackage ../development/ocaml-modules/brisk-reconciler { };
 
+    brr = callPackage ../development/ocaml-modules/brr { };
+
     bwd = callPackage ../development/ocaml-modules/bwd { };
 
     bz2 = callPackage ../development/ocaml-modules/bz2 { };