diff --git a/pkgs/development/ocaml-modules/core/default.nix b/pkgs/development/ocaml-modules/core/default.nix
index 90b62985d110..e15a2333880e 100644
--- a/pkgs/development/ocaml-modules/core/default.nix
+++ b/pkgs/development/ocaml-modules/core/default.nix
@@ -1,7 +1,7 @@
 {stdenv, buildOcaml, fetchurl, type_conv,
  core_kernel, bin_prot, comparelib, custom_printf, enumerate,
  fieldslib_p4, herelib, pa_bench, pa_test, pa_ounit,
- pipebang, sexplib_p4, typerep_p4, variantslib}:
+ pipebang, sexplib_p4, typerep_p4, variantslib_p4}:
 
 buildOcaml rec {
   name = "core";
@@ -19,7 +19,7 @@ buildOcaml rec {
   buildInputs = [ pa_bench pa_test pa_ounit ];
   propagatedBuildInputs = [ type_conv core_kernel bin_prot comparelib
                             custom_printf enumerate fieldslib_p4 herelib
-                            pipebang sexplib_p4 typerep_p4 variantslib ];
+                            pipebang sexplib_p4 typerep_p4 variantslib_p4 ];
 
   meta = with stdenv.lib; {
     homepage = https://github.com/janestreet/core;
diff --git a/pkgs/development/ocaml-modules/core_kernel/default.nix b/pkgs/development/ocaml-modules/core_kernel/default.nix
index 5e36a97aeb6b..75b399b52bd0 100644
--- a/pkgs/development/ocaml-modules/core_kernel/default.nix
+++ b/pkgs/development/ocaml-modules/core_kernel/default.nix
@@ -1,7 +1,7 @@
 {stdenv, buildOcaml, fetchurl, type_conv,
  bin_prot, comparelib, custom_printf, enumerate,
  fieldslib_p4, herelib, pa_bench, pa_test, pa_ounit,
- pipebang, sexplib_p4, typerep_p4, variantslib}:
+ pipebang, sexplib_p4, typerep_p4, variantslib_p4}:
 
 buildOcaml rec {
   name = "core_kernel";
@@ -19,7 +19,7 @@ buildOcaml rec {
   buildInputs = [ pa_test pa_ounit ];
   propagatedBuildInputs = [ type_conv pa_bench bin_prot comparelib custom_printf
                             enumerate fieldslib_p4 herelib pipebang sexplib_p4
-                            typerep_p4 variantslib ];
+                            typerep_p4 variantslib_p4 ];
 
   meta = with stdenv.lib; {
     homepage = https://github.com/janestreet/core_kernel;
diff --git a/pkgs/development/ocaml-modules/janestreet/variantslib.nix b/pkgs/development/ocaml-modules/janestreet/variantslib.nix
new file mode 100644
index 000000000000..d9acadbb6158
--- /dev/null
+++ b/pkgs/development/ocaml-modules/janestreet/variantslib.nix
@@ -0,0 +1,19 @@
+{stdenv, buildOcamlJane, type_conv}:
+
+buildOcamlJane rec {
+  name = "variantslib";
+  version = "113.33.03";
+
+  minimumSupportedOcamlVersion = "4.00";
+
+  hash = "1hv0f75msrryxsl6wfnbmhc0n8kf7qxs5f82ry3b8ldb44s3wigp";
+
+  propagatedBuildInputs = [ type_conv ];
+
+  meta = with stdenv.lib; {
+    homepage = https://github.com/janestreet/variantslib;
+    description = "OCaml variants as first class values";
+    license = licenses.asl20;
+    maintainers = [ maintainers.maurer maintainers.ericbmerritt ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 84479b743184..3b67f63df699 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -5487,7 +5487,7 @@ in
     uuseg = callPackage ../development/ocaml-modules/uuseg { };
     uutf = callPackage ../development/ocaml-modules/uutf { };
 
-    variantslib = callPackage ../development/ocaml-modules/variantslib { };
+    variantslib_p4 = callPackage ../development/ocaml-modules/variantslib { };
 
     vg = callPackage ../development/ocaml-modules/vg { };
 
@@ -5565,6 +5565,8 @@ in
     fieldslib = callPackage ../development/ocaml-modules/janestreet/fieldslib.nix {};
 
     sexplib = callPackage ../development/ocaml-modules/janestreet/sexplib.nix {};
+
+    variantslib = callPackage ../development/ocaml-modules/janestreet/variantslib.nix {};
   };
 
   ocamlPackages = recurseIntoAttrs ocamlPackages_4_01_0;