diff --git a/packages/core_kernel-windows/core_kernel-windows.v0.16.0/opam b/packages/core_kernel-windows/core_kernel-windows.v0.16.0/opam
new file mode 100644
index 00000000..deedac4e
--- /dev/null
+++ b/packages/core_kernel-windows/core_kernel-windows.v0.16.0/opam
@@ -0,0 +1,35 @@
+opam-version: "2.0"
+maintainer: "Jane Street developers"
+authors: ["Jane Street Group, LLC"]
+homepage: "https://github.com/janestreet/core_kernel"
+bug-reports: "https://github.com/janestreet/core_kernel/issues"
+dev-repo: "git+https://github.com/janestreet/core_kernel.git"
+doc: "https://ocaml.janestreet.com/ocaml-core/latest/doc/core_kernel/index.html"
+license: "MIT"
+build: [
+  ["dune" "build" "-p" "core_kernel" "-x" "windows" "-j" jobs]
+]
+depends: [
+  "ocaml-windows"        {>= "4.14.0"}
+  "base-windows"         {>= "v0.16" & < "v0.17"}
+  "core-windows"         {>= "v0.16" & < "v0.17"}
+  "int_repr-windows"     {>= "v0.16" & < "v0.17"}
+  "ppx_jane"     {>= "v0.16" & < "v0.17"}
+  "ppx_jane-windows"     {>= "v0.16" & < "v0.17"}
+  "ppx_optcomp"  {>= "v0.16" & < "v0.17"}
+  "ppx_optcomp-windows"  {>= "v0.16" & < "v0.17"}
+  "base-threads"
+  "dune"         {>= "2.0.0"}
+]
+synopsis: "Industrial strength alternative to OCaml's standard library"
+description: "
+The Core suite of libraries is an industrial strength alternative to
+OCaml's standard library that was developed by Jane Street, the
+largest industrial user of OCaml.
+
+Core_kernel is the system-independent part of Core.
+"
+url {
+src: "https://ocaml.janestreet.com/ocaml-core/v0.16/files/core_kernel-v0.16.0.tar.gz"
+checksum: "sha256=e37370bad978cfb71fdaf2b1a25ab1506b98ef0b91e0dbd189ffd9d853245ce2"
+}