diff --git a/packages/bip340/bip340.0.1.1/opam b/packages/bip340/bip340.0.1.1/opam
new file mode 100644
index 00000000000..93f445bc60e
--- /dev/null
+++ b/packages/bip340/bip340.0.1.1/opam
@@ -0,0 +1,37 @@
+# This file is generated by dune, edit dune-project instead
+opam-version: "2.0"
+synopsis: "bitcoin schnorr signatures"
+description:
+  "libsecp256k1 wrapper for OCaml that only exposes a few primitives required for creating and verifying Schnorr signatures."
+maintainer: ["andunie@cassis.cash"]
+authors: ["andunië"]
+license: "MIT"
+tags: ["topics" "bitcoin" "schnorr" "taproot" "bip340"]
+homepage: "https://github.com/andunieee/bip340"
+bug-reports: "https://github.com/andunieee/bip340/issues"
+depends: [
+  "dune" {>= "3.14"}
+  "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/andunieee/bip340.git"
+url {
+  src: "https://github.com/andunieee/bip340/archive/refs/tags/0.1.1.tar.gz"
+  checksum: [
+    "md5=0eb7433db487e7b985186869553820bc"
+    "sha512=d25dd5727c493ebef3ca88845abc79f8a5f73a94fdb9627be87f796c8ad56683dcdd531ddb4f592fa9edde74f6a92fc40e4c5b770ede00fc8c19eb640e161ced"
+  ]
+}