diff --git a/pkgs/development/ocaml-modules/ocaml-protoc/default.nix b/pkgs/development/ocaml-modules/ocaml-protoc/default.nix
index 5abb026032be..301a0f2c9a61 100644
--- a/pkgs/development/ocaml-modules/ocaml-protoc/default.nix
+++ b/pkgs/development/ocaml-modules/ocaml-protoc/default.nix
@@ -1,30 +1,19 @@
 { lib, fetchFromGitHub, buildDunePackage
+, pbrt
 , stdlib-shims
 }:
 
 buildDunePackage rec {
   pname = "ocaml-protoc";
-  version = "2.0.2";
 
-  useDune2 = true;
-
-  minimumOCamlVersion = "4.02";
-
-  src = fetchFromGitHub {
-    owner = "mransan";
-    repo = "ocaml-protoc";
-    rev = version;
-    sha256 = "1vlnjqqpypmjhlyrxfzla79y4ilmc9ggz311giy6vmh4cyzl29h3";
-  };
+  inherit (pbrt) version src;
 
   buildInputs = [ stdlib-shims ];
+  propagatedBuildInputs = [ pbrt ];
 
   doCheck = true;
 
-  meta = with lib; {
-    homepage = "https://github.com/mransan/ocaml-protoc";
+  meta = pbrt.meta // {
     description = "A Protobuf Compiler for OCaml";
-    license = licenses.mit;
-    maintainers = [ maintainers.vyorkin ];
   };
 }
diff --git a/pkgs/development/ocaml-modules/pbrt/default.nix b/pkgs/development/ocaml-modules/pbrt/default.nix
new file mode 100644
index 000000000000..ec5e5df7ab49
--- /dev/null
+++ b/pkgs/development/ocaml-modules/pbrt/default.nix
@@ -0,0 +1,23 @@
+{ lib, fetchFromGitHub, buildDunePackage }:
+
+buildDunePackage rec {
+  pname = "pbrt";
+  version = "2.4";
+
+  minimalOCamlVersion = "4.03";
+
+  src = fetchFromGitHub {
+    owner = "mransan";
+    repo = "ocaml-protoc";
+    rev = "${version}.0";
+    hash = "sha256-EXugdcjALukSjB31zAVG9WiN6GMGXi2jlhHWaZ+p+uM=";
+  };
+
+  meta = with lib; {
+    homepage = "https://github.com/mransan/ocaml-protoc";
+    description = "Runtime library for Protobuf tooling";
+    license = licenses.mit;
+    maintainers = [ maintainers.vyorkin ];
+  };
+}
+
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index e66c1fbc9fb0..4bd589ec7826 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -1396,6 +1396,8 @@ let
 
     pbkdf = callPackage ../development/ocaml-modules/pbkdf { };
 
+    pbrt = callPackage ../development/ocaml-modules/pbrt { };
+
     pcap-format = callPackage ../development/ocaml-modules/pcap-format { };
 
     pecu = callPackage ../development/ocaml-modules/pecu { };