diff --git a/pkgs/development/ocaml-modules/ppx_yojson_conv_lib/default.nix b/pkgs/development/ocaml-modules/ppx_yojson_conv_lib/default.nix
new file mode 100644
index 00000000000..442a4126a89
--- /dev/null
+++ b/pkgs/development/ocaml-modules/ppx_yojson_conv_lib/default.nix
@@ -0,0 +1,24 @@
+{ lib, buildDunePackage, fetchFromGitHub, yojson }:
+
+buildDunePackage rec {
+  pname = "ppx_yojson_conv_lib";
+  version = "0.14.0";
+
+  minimumOCamlVersion = "4.02.3";
+
+  src = fetchFromGitHub {
+    owner = "janestreet";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "12s3xshayy1f8cp9lk6zqwnw60n7cdap55gkksz5w65gdd8bfxmf";
+  };
+
+  propagatedBuildInputs = [ yojson ];
+
+  meta = with lib; {
+    description = "Runtime lib for ppx_yojson_conv";
+    homepage = "https://github.com/janestreet/ppx_yojson_conv_lib";
+    maintainers = [ maintainers.marsam ];
+    license = licenses.mit;
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index bc7f1532f78..b723bd8739d 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -838,6 +838,8 @@ let
 
     ppx_tools_versioned = callPackage ../development/ocaml-modules/ppx_tools_versioned { };
 
+    ppx_yojson_conv_lib = callPackage ../development/ocaml-modules/ppx_yojson_conv_lib {};
+
     printbox = callPackage ../development/ocaml-modules/printbox { };
 
     process = callPackage ../development/ocaml-modules/process { };