diff --git a/pkgs/development/ocaml-modules/janestreet/buildOcamlJane.nix b/pkgs/development/ocaml-modules/janestreet/buildOcamlJane.nix
index 6e988c4479a5..61b2038bfd29 100644
--- a/pkgs/development/ocaml-modules/janestreet/buildOcamlJane.nix
+++ b/pkgs/development/ocaml-modules/janestreet/buildOcamlJane.nix
@@ -1,4 +1,4 @@
-{ buildOcaml, opam, js_build_tools, ocaml_oasis_46, fetchurl } :
+{ buildOcaml, opam, js_build_tools, ocaml_oasis, fetchurl } :
 
 { name, version ? "113.33.03", buildInputs ? [],
   hash ? "",
@@ -14,7 +14,7 @@ buildOcaml (args // {
 
   hasSharedObjects = true;
 
-  buildInputs = [ ocaml_oasis_46 js_build_tools opam ] ++ buildInputs;
+  buildInputs = [ ocaml_oasis js_build_tools opam ] ++ buildInputs;
 
   dontAddPrefix = true;
 
diff --git a/pkgs/development/ocaml-modules/janestreet/js-build-tools.nix b/pkgs/development/ocaml-modules/janestreet/js-build-tools.nix
index 328ffc58bdc1..2c314f3dbdea 100644
--- a/pkgs/development/ocaml-modules/janestreet/js-build-tools.nix
+++ b/pkgs/development/ocaml-modules/janestreet/js-build-tools.nix
@@ -1,4 +1,4 @@
-{stdenv, buildOcaml, fetchurl, ocaml_oasis_46, opam}:
+{ stdenv, buildOcaml, fetchurl, ocaml_oasis, opam }:
 
 buildOcaml rec {
   name = "js-build-tools";
@@ -13,7 +13,7 @@ buildOcaml rec {
 
   hasSharedObjects = true;
 
-  buildInputs = [ ocaml_oasis_46 opam ];
+  buildInputs = [ ocaml_oasis opam ];
 
   dontAddPrefix = true;
   configurePhase = "./configure --prefix $prefix";
diff --git a/pkgs/development/tools/ocaml/oasis/0.4.6.nix b/pkgs/development/tools/ocaml/oasis/0.4.6.nix
deleted file mode 100644
index b5e977d623b3..000000000000
--- a/pkgs/development/tools/ocaml/oasis/0.4.6.nix
+++ /dev/null
@@ -1,35 +0,0 @@
-{ stdenv, fetchurl, ocaml, findlib, ocamlbuild, camlp4
-, ocaml_data_notation, type_conv, ocamlmod, ocamlify, ounit, expect
-}:
-
-stdenv.mkDerivation {
-  name = "ocaml-oasis-0.4.6";
-
-  src = fetchurl {
-    url = http://forge.ocamlcore.org/frs/download.php/1604/oasis-0.4.6.tar.gz;
-    sha256 = "1yxv3ckkf87nz0cyll0yy1kd295j5pv3jqwkfrr1y65wkz5vw90k";
-  };
-
-  createFindlibDestdir = true;
-
-  buildInputs =
-    [
-      ocaml findlib ocamlbuild type_conv ocamlmod ocamlify ounit camlp4
-    ];
-
-  propagatedBuildInputs = [ ocaml_data_notation ];
-
-  configurePhase = "ocaml setup.ml -configure --prefix $out";
-  buildPhase     = "ocaml setup.ml -build";
-  installPhase   = "ocaml setup.ml -install";
-
-  meta = with stdenv.lib; {
-    homepage = http://oasis.forge.ocamlcore.org/;
-    description = "Configure, build and install system for OCaml projects";
-    license = licenses.lgpl21;
-    platforms = ocaml.meta.platforms or [];
-    maintainers = with maintainers; [
-      vbgl z77z
-    ];
-  };
-}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index d7a6c6cb63d8..cf8f49fb427f 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -397,7 +397,6 @@ let
     ocamlnet = callPackage ../development/ocaml-modules/ocamlnet { };
 
     ocaml_oasis = callPackage ../development/tools/ocaml/oasis { };
-    ocaml_oasis_46 = callPackage ../development/tools/ocaml/oasis/0.4.6.nix { };
 
     ocaml_optcomp = callPackage ../development/ocaml-modules/optcomp { };