diff --git a/pkgs/development/ocaml-modules/janestreet/ppx-variants-conv.nix b/pkgs/development/ocaml-modules/janestreet/ppx-variants-conv.nix
new file mode 100644
index 000000000000..d707df93a16d
--- /dev/null
+++ b/pkgs/development/ocaml-modules/janestreet/ppx-variants-conv.nix
@@ -0,0 +1,14 @@
+{stdenv, buildOcamlJane,
+ ppx_core, ppx_tools, ppx_type_conv, sexplib}:
+
+buildOcamlJane rec {
+  name = "ppx_variants_conv";
+  hash = "0kgal8b9yh7wrd75hllb9fyl6zbksfnr9k7pykpzdm3js98dirhn";
+  propagatedBuildInputs = [ ppx_core ppx_tools ppx_type_conv sexplib];
+
+  meta = with stdenv.lib; {
+    description = "Generation of accessor and iteration functions for ocaml variant types.";
+    maintainers = [ maintainers.maurer ];
+    license = licenses.asl20;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 316052942a43..bb6185cb3ca5 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -5551,6 +5551,8 @@ in
     ppx_sexp_value = callPackage ../development/ocaml-modules/janestreet/ppx-sexp-value.nix {};
 
     ppx_typerep_conv = callPackage ../development/ocaml-modules/janestreet/ppx-typerep-conv.nix {};
+
+    ppx_variants_conv = callPackage ../development/ocaml-modules/janestreet/ppx-variants-conv.nix {};
   };
 
   ocamlPackages = recurseIntoAttrs ocamlPackages_4_01_0;