diff --git a/packages/md2mld/md2mld.0.4.0/opam b/packages/md2mld/md2mld.0.4.0/opam
new file mode 100644
index 000000000000..d022bee523c2
--- /dev/null
+++ b/packages/md2mld/md2mld.0.4.0/opam
@@ -0,0 +1,25 @@
+opam-version: "2.0"
+synopsis: "Little cli tool to convert md files into mld files"
+maintainer: "Marcello Seri <marcello.seri@gmail.com>"
+authors: "Marcello Seri <marcello.seri@gmail.com>"
+license: "ISC"
+homepage: "https://github.com/mseri/md2mld"
+doc: "https://mseri.github.io/md2mld/"
+bug-reports: "https://github.com/mseri/md2mld/issues"
+depends: [
+  "ocaml"
+  "dune" {>= "2.0"}
+  "base-bytes"
+  "omd" {= "2.0.0~alpha1"}
+]
+build: ["dune" "build" "-p" name "-j" jobs "@install" "@runtest" {with-test}]
+dev-repo: "git+https://github.com/mseri/md2mld.git"
+x-commit-hash: "e736b1d043efdcb207a5835af4f9a14ebec97ce3"
+url {
+  src:
+    "https://github.com/mseri/md2mld/releases/download/0.4.0/md2mld-0.4.0.tbz"
+  checksum: [
+    "sha256=cc8ecb0b3062c43116935a61350255a16e88dcb9b87536b65f7d7c0bd28bdf45"
+    "sha512=5ff662bceb37ff333460a9d243467aebdcac03fe7ff16e7394316dadbace2777b34f37be34b4feffeeeadfe86aeb8704a021b26f1a63575f5be7a763c7231251"
+  ]
+}