diff --git a/packages/fileutils/fileutils.0.6.5/opam b/packages/fileutils/fileutils.0.6.5/opam
new file mode 100644
index 00000000000..b9f08f4a925
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+++ b/packages/fileutils/fileutils.0.6.5/opam
@@ -0,0 +1,48 @@
+opam-version: "2.0"
+maintainer: "Sylvain Le Gall <sylvain+ocaml@le-gall.net>"
+authors: [ "Sylvain Le Gall" ]
+homepage: "https://github.com/gildor478/ocaml-fileutils"
+license: "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception"
+dev-repo: "git+https://github.com/gildor478/ocaml-fileutils.git"
+bug-reports: "https://github.com/gildor478/ocaml-fileutils/issues"
+doc: "https://gildor478.github.io/ocaml-fileutils/"
+
+build: [
+  ["dune" "build" "-p" name "-j" jobs]
+  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
+  ["dune" "build" "@doc" "-p" name "-j" jobs] {with-doc}
+]
+depends: [
+  "ocaml" {>= "4.14"}
+  "base-unix"
+  "stdlib-shims"
+  "seq"
+  "dune" {>= "1.11.0"}
+  "ounit2" {with-test & >= "2.0.0"}
+]
+synopsis: "API to manipulate files (POSIX like) and filenames"
+description: """
+This library provides an API to perform POSIX like operations on files like:
+
+- mv
+- cp
+- rm
+- mkdir
+- touch
+- which...
+
+It also provides a module to manipulate abstract filenames:
+
+- classification
+- make_relative: made a filename relative to another
+- make_absolute
+"""
+url {
+  src:
+    "https://github.com/gildor478/ocaml-fileutils/releases/download/v0.6.5/fileutils-0.6.5.tbz"
+  checksum: [
+    "sha256=e15704bdbd672d3594f2561b169b07c6ec7ababc74fcf2ca1d93295744387c3b"
+    "sha512=ba0d06c2b3a9cd3a9e3169b25295e8735959b4c8c7b811ff9f69cda014f1e172269b59502e0701fa07c3a936b14a2f0a34415e45e2f7022b5d982e4d0daee463"
+  ]
+}
+x-commit-hash: "84e7fecbe9b3b6b33988120a252055732cc712f4"