diff --git a/pkgs/development/ocaml-modules/janestreet/ppx-type-conv.nix b/pkgs/development/ocaml-modules/janestreet/ppx-type-conv.nix
deleted file mode 100644
index bf36dfab5cb..00000000000
--- a/pkgs/development/ocaml-modules/janestreet/ppx-type-conv.nix
+++ /dev/null
@@ -1,15 +0,0 @@
-{stdenv, buildOcamlJane,
- ppx_core, ppx_deriving, ppx_driver, ppx_tools}:
-
-buildOcamlJane {
-  name = "ppx_type_conv";
-  hash = "0gv0mqwn97dwrfm6rj442565y8dz7kiq8s8vadnhywrl7j4znqyq";
-  propagatedBuildInputs =
-    [ ppx_core ppx_deriving ppx_driver ppx_tools ];
-
-  meta = with stdenv.lib; {
-    description = "The type_conv library factors out functionality needed by different preprocessors that generate code from type specifications";
-    maintainers = [ maintainers.maurer ];
-    license = licenses.asl20;
-  };
-}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 351601a2566..4cc8b453899 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -1053,11 +1053,6 @@ let
       then janeStreet.ppx_optcomp
       else callPackage ../development/ocaml-modules/janestreet/ppx-optcomp.nix {};
 
-    ppx_type_conv =
-      if lib.versionOlder "4.03" ocaml.version
-      then janeStreet.ppx_type_conv
-      else callPackage ../development/ocaml-modules/janestreet/ppx-type-conv.nix {};
-
     ppx_compare =
       if lib.versionOlder "4.03" ocaml.version
       then janeStreet.ppx_compare