diff --git a/packages/ff/ff.0.2.1/opam b/packages/ff/ff.0.2.1/opam
new file mode 100644
index 00000000000..b99133bd015
--- /dev/null
+++ b/packages/ff/ff.0.2.1/opam
@@ -0,0 +1,24 @@
+opam-version: "2.0"
+synopsis: "OCaml implementation of Finite Field operations"
+description: "OCaml implementation of Finite Field operations"
+maintainer: "Danny Willems <be.danny.willems@gmail.com>"
+authors: "Danny Willems <be.danny.willems@gmail.com>"
+license: "MIT"
+homepage: "https://gitlab.com/dannywillems/ocaml-ff"
+bug-reports: "https://gitlab.com/dannywillems/ocaml-ff/issues"
+depends: [
+  "dune" {>= "2.0"}
+  "zarith" {>= "1.9.1" & < "2.0"}
+  "alcotest" {with-test}
+]
+build: ["dune" "build" "-j" jobs "-p" name "@install"]
+run-test: ["dune" "runtest" "-p" name "-j" jobs]
+dev-repo: "git+https://gitlab.com/dannywillems/ocaml-ff.git"
+url {
+  src:
+    "https://gitlab.com/dannywillems/ocaml-ff/-/archive/0.2.1/ocaml-ff-0.2.1.tar.gz"
+  checksum: [
+    "md5=86aa724458d6c547559add7312325541"
+    "sha512=b689241a61836c7f094e7bb7ba8b640f84c401c82ec388dceacace6599dc3895baca352d7af0b2ee7c2c7a1275d1f0f451e7210e5424614fabea749528f68cf8"
+  ]
+}
\ No newline at end of file