diff --git a/packages/letsencrypt-app/letsencrypt-app.0.5.0/opam b/packages/letsencrypt-app/letsencrypt-app.0.5.0/opam
new file mode 100644
index 00000000000..6a4d5828c47
--- /dev/null
+++ b/packages/letsencrypt-app/letsencrypt-app.0.5.0/opam
@@ -0,0 +1,42 @@
+opam-version: "2.0"
+synopsis: "ACME implementation in OCaml"
+description: "An ACME client implementation of the ACME protocol (RFC 8555) for OCaml"
+maintainer: "Michele Mu <maker@tumbolandia.net>"
+authors:
+  "Michele Mu <maker@tumbolandia.net>, Hannes Mehnert <hannes@mehnert.org>"
+license: "BSD-2-clause"
+homepage: "https://github.com/mmaker/ocaml-letsencrypt"
+bug-reports: "https://github.com/mmaker/ocaml-letsencrypt/issues"
+doc: "https://mmaker.github.io/ocaml-letsencrypt"
+depends: [
+  "ocaml" {>= "4.08.0"}
+  "dune" {>= "1.2.0"}
+  "letsencrypt" {= version}
+  "letsencrypt-dns" {= version}
+  "cmdliner" {>= "1.1.0"}
+  "cohttp-lwt-unix" {>= "1.0.0"}
+  "logs"
+  "fmt" {>= "0.8.7"}
+  "lwt" {>= "2.6.0"}
+  "mirage-crypto-rng" {>= "0.11.0"}
+  "ptime"
+  "bos"
+  "fpath"
+  "randomconv"
+  "cstruct" {>= "6.0.0"}
+]
+build: [
+  ["dune" "subst"] {dev}
+  ["dune" "build" "-p" name "-j" jobs]
+  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
+]
+dev-repo: "git+https://github.com/mmaker/ocaml-letsencrypt.git"
+url {
+  src:
+    "https://github.com/mmaker/ocaml-letsencrypt/releases/download/v0.5.0/letsencrypt-0.5.0.tbz"
+  checksum: [
+    "sha256=5c6ae86623723f422d38cad72b4ee7ad5a93e18cfd44a5d8bd9b91903a74f3d3"
+    "sha512=b1cb55ffc2357c114b58773fe4c497f2d73ae24a22ad18697c7b8703d2f8b7845f1f120fdea2d83b34ca2cc2b69b07fe6da40addf4888c4f077609d1e6b5095e"
+  ]
+}
+x-commit-hash: "6515240f24cd0b18df6418de4f92c56fcb2a96a4"
diff --git a/packages/letsencrypt-dns/letsencrypt-dns.0.5.0/opam b/packages/letsencrypt-dns/letsencrypt-dns.0.5.0/opam
new file mode 100644
index 00000000000..16372d2f55a
--- /dev/null
+++ b/packages/letsencrypt-dns/letsencrypt-dns.0.5.0/opam
@@ -0,0 +1,36 @@
+opam-version: "2.0"
+synopsis: "DNS solver for ACME implementation in OCaml"
+description: "A DNS solver for the ACME implementation in OCaml."
+maintainer: "Michele Mu <maker@tumbolandia.net>"
+authors:
+  "Michele Mu <maker@tumbolandia.net>, Hannes Mehnert <hannes@mehnert.org>"
+license: "BSD-2-clause"
+homepage: "https://github.com/mmaker/ocaml-letsencrypt"
+bug-reports: "https://github.com/mmaker/ocaml-letsencrypt/issues"
+doc: "https://mmaker.github.io/ocaml-letsencrypt"
+depends: [
+  "ocaml" {>= "4.08.0"}
+  "dune" {>= "1.2.0"}
+  "letsencrypt" {= version}
+  "logs"
+  "fmt" {>= "0.8.7"}
+  "lwt" {>= "2.6.0"}
+  "dns"
+  "dns-tsig"
+  "domain-name" {>= "0.2.0"}
+]
+build: [
+  ["dune" "subst"] {dev}
+  ["dune" "build" "-p" name "-j" jobs]
+  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
+]
+dev-repo: "git+https://github.com/mmaker/ocaml-letsencrypt.git"
+url {
+  src:
+    "https://github.com/mmaker/ocaml-letsencrypt/releases/download/v0.5.0/letsencrypt-0.5.0.tbz"
+  checksum: [
+    "sha256=5c6ae86623723f422d38cad72b4ee7ad5a93e18cfd44a5d8bd9b91903a74f3d3"
+    "sha512=b1cb55ffc2357c114b58773fe4c497f2d73ae24a22ad18697c7b8703d2f8b7845f1f120fdea2d83b34ca2cc2b69b07fe6da40addf4888c4f077609d1e6b5095e"
+  ]
+}
+x-commit-hash: "6515240f24cd0b18df6418de4f92c56fcb2a96a4"
diff --git a/packages/letsencrypt-mirage/letsencrypt-mirage.0.5.0/opam b/packages/letsencrypt-mirage/letsencrypt-mirage.0.5.0/opam
new file mode 100644
index 00000000000..33c9f6e6229
--- /dev/null
+++ b/packages/letsencrypt-mirage/letsencrypt-mirage.0.5.0/opam
@@ -0,0 +1,36 @@
+opam-version: "2.0"
+synopsis: "ACME implementation in OCaml for MirageOS"
+description: "An ACME client implementation of the ACME protocol (RFC 8555) for OCaml & MirageOS"
+maintainer: "Michele Mu <maker@tumbolandia.net>"
+authors:
+  "Michele Mu <maker@tumbolandia.net>, Hannes Mehnert <hannes@mehnert.org>"
+license: "BSD-2-clause"
+homepage: "https://github.com/mmaker/ocaml-letsencrypt"
+bug-reports: "https://github.com/mmaker/ocaml-letsencrypt/issues"
+doc: "https://mmaker.github.io/ocaml-letsencrypt"
+depends: [
+  "ocaml" {>= "4.08.0"}
+  "dune" {>= "1.2.0"}
+  "letsencrypt" {= version}
+  "http-mirage-client"
+  "tcpip" {>= "7.0.0"}
+  "mirage-time" {>= "3.0.0"}
+  "duration"
+  "emile" {>= "1.1"}
+  "paf" {>= "0.4.0"}
+]
+build: [
+  ["dune" "subst"] {dev}
+  ["dune" "build" "-p" name "-j" jobs]
+  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
+]
+dev-repo: "git+https://github.com/mmaker/ocaml-letsencrypt.git"
+url {
+  src:
+    "https://github.com/mmaker/ocaml-letsencrypt/releases/download/v0.5.0/letsencrypt-0.5.0.tbz"
+  checksum: [
+    "sha256=5c6ae86623723f422d38cad72b4ee7ad5a93e18cfd44a5d8bd9b91903a74f3d3"
+    "sha512=b1cb55ffc2357c114b58773fe4c497f2d73ae24a22ad18697c7b8703d2f8b7845f1f120fdea2d83b34ca2cc2b69b07fe6da40addf4888c4f077609d1e6b5095e"
+  ]
+}
+x-commit-hash: "6515240f24cd0b18df6418de4f92c56fcb2a96a4"
diff --git a/packages/letsencrypt/letsencrypt.0.5.0/opam b/packages/letsencrypt/letsencrypt.0.5.0/opam
new file mode 100644
index 00000000000..ad7d4acaeef
--- /dev/null
+++ b/packages/letsencrypt/letsencrypt.0.5.0/opam
@@ -0,0 +1,46 @@
+opam-version: "2.0"
+synopsis: "ACME implementation in OCaml"
+description: "An implementation of the ACME protocol (RFC 8555) for OCaml"
+maintainer: "Michele Mu <maker@tumbolandia.net>"
+authors:
+  "Michele Mu <maker@tumbolandia.net>, Hannes Mehnert <hannes@mehnert.org>"
+license: "BSD-2-clause"
+homepage: "https://github.com/mmaker/ocaml-letsencrypt"
+bug-reports: "https://github.com/mmaker/ocaml-letsencrypt/issues"
+doc: "https://mmaker.github.io/ocaml-letsencrypt"
+depends: [
+  "ocaml" {>= "4.08.0"}
+  "dune" {>= "1.2.0"}
+  "base64" {>= "3.3.0"}
+  "logs"
+  "fmt" {>= "0.8.7"}
+  "uri"
+  "lwt" {>= "2.6.0"}
+  "mirage-crypto"
+  "mirage-crypto-ec"
+  "mirage-crypto-pk"
+  "mirage-crypto-pk" {with-test & >= "0.8.9"}
+  "mirage-crypto-rng" {with-test & >= "0.11.0"}
+  "x509" {>= "0.13.0"}
+  "yojson" {>= "1.6.0"}
+  "ounit" {with-test}
+  "ptime"
+  "domain-name" {>= "0.2.0"}
+  "cstruct" {>= "6.0.0"}
+]
+conflicts: [ "result" {< "1.5"} ]
+build: [
+  ["dune" "subst"] {dev}
+  ["dune" "build" "-p" name "-j" jobs]
+  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
+]
+dev-repo: "git+https://github.com/mmaker/ocaml-letsencrypt.git"
+url {
+  src:
+    "https://github.com/mmaker/ocaml-letsencrypt/releases/download/v0.5.0/letsencrypt-0.5.0.tbz"
+  checksum: [
+    "sha256=5c6ae86623723f422d38cad72b4ee7ad5a93e18cfd44a5d8bd9b91903a74f3d3"
+    "sha512=b1cb55ffc2357c114b58773fe4c497f2d73ae24a22ad18697c7b8703d2f8b7845f1f120fdea2d83b34ca2cc2b69b07fe6da40addf4888c4f077609d1e6b5095e"
+  ]
+}
+x-commit-hash: "6515240f24cd0b18df6418de4f92c56fcb2a96a4"