diff --git a/packages/argon2/argon2.1.0.2/opam b/packages/argon2/argon2.1.0.2/opam
new file mode 100644
index 00000000000..96f7faeef69
--- /dev/null
+++ b/packages/argon2/argon2.1.0.2/opam
@@ -0,0 +1,41 @@
+opam-version: "2.0"
+maintainer: "Louis Roché <louis@louisroche.net>"
+authors: "Louis Roché <louis@louisroche.net>"
+homepage: "https://github.com/Khady/ocaml-argon2"
+dev-repo: "git+https://github.com/Khady/ocaml-argon2.git"
+bug-reports: "https://github.com/Khady/ocaml-argon2/issues"
+doc: "https://khady.github.io/ocaml-argon2/"
+license: "MIT"
+depends: [
+  "ocaml" {>= "4.02.3"}
+  "dune" {>= "2.0"}
+  "dune-configurator" {>= "2.0"}
+  "ctypes" {>= "0.4.1"}
+  "ctypes-foreign"
+  "result"
+  "odoc" {with-doc}
+]
+build: [
+  ["dune" "subst"] {dev}
+  ["dune" "build" "-p" name "-j" jobs "@install" "@doc" {with-doc}]
+]
+depexts: [
+  ["libargon2-dev"] {os-family = "debian"}
+  ["libargon2-dev"] {os-family = "ubuntu"}
+  ["libargon2-devel"] {os-distribution = "fedora"}
+]
+synopsis: "OCaml bindings to Argon2"
+description: """
+Based on argon2 library as described in https://github.com/P-H-C/phc-winner-argon2.
+
+libargon2 must be installed on your system for this library to work.
+"""
+url {
+  src:
+    "https://github.com/Khady/ocaml-argon2/releases/download/1.0.2/argon2-1.0.2.tbz"
+  checksum: [
+    "sha256=343b0e57890f4f64a749f3470c100af952998070c82b15be74d27f0b96d0f205"
+    "sha512=c25a2c5dda3eecd13de82026c4e301f2896a0dc3a2cc9b6ed48925e1fef4fdfc1751091c85638d811a5c642b0a72e1a52df063e5b9cf935041575ecfc7fc76ae"
+  ]
+}
+x-commit-hash: "2c6e25a8c6f157585c643bac370a0344e18624f5"