diff --git a/pkgs/development/ocaml-modules/core_kernel/default.nix b/pkgs/development/ocaml-modules/core_kernel/default.nix
deleted file mode 100644
index f51f60f25f18..000000000000
--- a/pkgs/development/ocaml-modules/core_kernel/default.nix
+++ /dev/null
@@ -1,30 +0,0 @@
-{stdenv, buildOcaml, fetchurl, type_conv,
- bin_prot_p4, comparelib, custom_printf, enumerate,
- fieldslib_p4, herelib, pa_bench, pa_test, pa_ounit,
- pipebang, sexplib_p4, typerep_p4, variantslib_p4}:
-
-buildOcaml rec {
-  name = "core_kernel";
-  version = "112.24.00";
-
-  minimumSupportedOcamlVersion = "4.02";
-
-  src = fetchurl {
-    url = "https://github.com/janestreet/core_kernel/archive/${version}.tar.gz";
-    sha256 = "93e1f21e35ade98a2bfbe45ba76eef4a8ad3fed97cdc0769f96e0fcc86d6a761";
-  };
-
-  hasSharedObjects = true;
-
-  buildInputs = [ pa_test pa_ounit ];
-  propagatedBuildInputs = [ type_conv pa_bench bin_prot_p4 comparelib custom_printf
-                            enumerate fieldslib_p4 herelib pipebang sexplib_p4
-                            typerep_p4 variantslib_p4 ];
-
-  meta = with stdenv.lib; {
-    homepage = "https://github.com/janestreet/core_kernel";
-    description = "Jane Street Capital's standard library overlay (kernel)";
-    license = licenses.asl20;
-    maintainers = [ maintainers.ericbmerritt ];
-  };
-}
diff --git a/pkgs/development/ocaml-modules/janestreet/core_kernel.nix b/pkgs/development/ocaml-modules/janestreet/core_kernel.nix
deleted file mode 100644
index b2f0661e7683..000000000000
--- a/pkgs/development/ocaml-modules/janestreet/core_kernel.nix
+++ /dev/null
@@ -1,18 +0,0 @@
-{stdenv, buildOcamlJane,
- bin_prot, fieldslib, sexplib, typerep, variantslib,
- ppx_assert, ppx_bench, ppx_driver, ppx_expect, ppx_inline_test, ppx_jane}:
-
-buildOcamlJane {
-  name = "core_kernel";
-  hash = "13gamj056nlib04l7yh80lqpdx0pnswzlb52fkqa01awwp5nf3z6";
-  propagatedBuildInputs =
-    [ bin_prot fieldslib sexplib typerep variantslib
-      ppx_assert ppx_bench ppx_driver ppx_expect ppx_inline_test ppx_jane ];
-
-  meta = with stdenv.lib; {
-    homepage = "https://github.com/janestreet/core_kernel";
-    description = "Jane Street Capital's standard library overlay (kernel)";
-    license = licenses.asl20;
-    maintainers = [ maintainers.maurer maintainers.ericbmerritt ];
-  };
-}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 821166fca92f..c19e0b612b04 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -589,8 +589,6 @@ let
 
     comparelib = callPackage ../development/ocaml-modules/comparelib { };
 
-    core_kernel_p4 = callPackage ../development/ocaml-modules/core_kernel { };
-
     ocamlbuild =
     if lib.versionOlder "4.03" ocaml.version then
     callPackage ../development/tools/ocaml/ocamlbuild { }
@@ -1160,13 +1158,6 @@ let
       then janeStreet.core_bench else
       callPackage ../development/ocaml-modules/janestreet/core_bench.nix {};
 
-    core_kernel =
-      if lib.versionOlder "4.03" ocaml.version
-      then janeStreet.core_kernel
-      else if lib.versionOlder "4.02" ocaml.version
-      then callPackage ../development/ocaml-modules/janestreet/core_kernel.nix {}
-      else core_kernel_p4;
-
     async_rpc_kernel =
       if lib.versionOlder "4.03" ocaml.version
       then janeStreet.async_rpc_kernel