diff --git a/packages/p5scm/p5scm.0.5.0/opam b/packages/p5scm/p5scm.0.5.0/opam
new file mode 100644
index 000000000000..667620f602d6
--- /dev/null
+++ b/packages/p5scm/p5scm.0.5.0/opam
@@ -0,0 +1,43 @@
+# This file is generated by dune, edit dune-project instead
+opam-version: "2.0"
+synopsis: "Scheme via camlp5"
+description:
+  "This a simple scheme implementation using pa_schemer from camlp5"
+maintainer: ["drjdnielsen@gmail.com"]
+authors: ["Jason D. Nielsen"]
+license: "MIT"
+homepage: "https://github.com/drjdn/p5scm"
+bug-reports: "https://github.com/drjdn/p5scm/issues"
+depends: [
+  "dune" {>= "2.8"}
+  "ocaml" {>= "4.12.0" & < "5.5.0"}
+  "menhir" {>= "20201214"}
+  "cppo" {>= "1.6.6"}
+  "camlp5" {>= "8.04.00"}
+  "sexp_pretty" {>= "v0.14.0"}
+  "ppx_sexp_conv" {>= "v0.14.0"}
+  "utop" {>= "2.7.0"}
+  "odoc" {with-doc}
+]
+build: [
+  ["dune" "subst"] {dev}
+  [
+    "dune"
+    "build"
+    "-p"
+    name
+    "-j"
+    jobs
+    "@install"
+    "@runtest" {with-test}
+    "@doc" {with-doc}
+  ]
+]
+dev-repo: "git+https://github.com/drjdn/p5scm.git"
+url {
+  src: "https://github.com/drjdn/p5scm/archive/refs/tags/0.5.0.tar.gz"
+  checksum: [
+    "md5=e0fe733bb7a8cccc94bfbbd3b58e6d76"
+    "sha512=4f4efad8bb7b2ab5cfc0fff9bb48e45df8e7396d288d52f5c84b53919e1979720bbd909e82e714e1eb6fe8d3b83c14656167199373a197a6082eab2457fea94d"
+  ]
+}