diff --git a/pkgs/development/compilers/ligo/default.nix b/pkgs/development/compilers/ligo/default.nix
index 8257eab56aa2..ccba9ca3a1b2 100644
--- a/pkgs/development/compilers/ligo/default.nix
+++ b/pkgs/development/compilers/ligo/default.nix
@@ -15,31 +15,28 @@
 
 ocamlPackages.buildDunePackage rec {
   pname = "ligo";
-  version = "0.72.0";
+  version = "1.0.0";
   src = fetchFromGitLab {
     owner = "ligolang";
     repo = "ligo";
     rev = version;
-    sha256 = "sha256-DQ3TxxLxi8/W1+uBX7NEBIsVXBKnJBa6YNRBFleNrEA=";
+    sha256 = "sha256-tHIIA1JE7mzDIf2v9IEZt1pjVQEA89zjTsmqhzTn3Wc=";
     fetchSubmodules = true;
   };
 
   postPatch = ''
-    substituteInPlace "vendors/tezos-ligo/src/lib_hacl/hacl.ml" \
+    substituteInPlace "vendors/tezos-ligo/dune-project" \
       --replace \
-        "Hacl.NaCl.Noalloc.Easy.secretbox ~pt:msg ~n:nonce ~key ~ct:cmsg" \
-        "Hacl.NaCl.Noalloc.Easy.secretbox ~pt:msg ~n:nonce ~key ~ct:cmsg ()" \
+        "(using ctypes 0.1)" \
+        "(using ctypes 0.3)" \
       --replace \
-        "Hacl.NaCl.Noalloc.Easy.box_afternm ~pt:msg ~n:nonce ~ck:k ~ct:cmsg" \
-        "Hacl.NaCl.Noalloc.Easy.box_afternm ~pt:msg ~n:nonce ~ck:k ~ct:cmsg ()"
+        "(lang dune 3.0)" \
+        "(lang dune 3.7)"
 
-    substituteInPlace "vendors/tezos-ligo/src/lib_crypto/crypto_box.ml" \
+    substituteInPlace "src/coq/dune" \
       --replace \
-        "secretbox_open ~key ~nonce ~cmsg ~msg" \
-        "secretbox_open ~key ~nonce ~cmsg ~msg ()" \
-      --replace \
-        "Box.box_open ~k ~nonce ~cmsg ~msg" \
-        "Box.box_open ~k ~nonce ~cmsg ~msg ()"
+        "(name ligo_coq)" \
+        "(name ligo_coq)(mode vo)"
   '';
 
   # The build picks this up for ligo --version
@@ -48,8 +45,6 @@ ocamlPackages.buildDunePackage rec {
   # This is a hack to work around the hack used in the dune files
   OPAM_SWITCH_PREFIX = "${tezos-rust-libs}";
 
-  duneVersion = "3";
-
   strictDeps = true;
 
   nativeBuildInputs = [
@@ -93,6 +88,8 @@ ocamlPackages.buildDunePackage rec {
     parse-argv
     hacl-star
     prometheus
+    lwt_ppx
+    msgpck
     # lsp
     linol
     linol-lwt
diff --git a/pkgs/development/ocaml-modules/msgpck/default.nix b/pkgs/development/ocaml-modules/msgpck/default.nix
new file mode 100644
index 000000000000..2871e774f3fe
--- /dev/null
+++ b/pkgs/development/ocaml-modules/msgpck/default.nix
@@ -0,0 +1,31 @@
+{ lib
+, fetchFromGitHub
+, buildDunePackage
+, ocplib-endian
+, alcotest
+}:
+
+buildDunePackage rec {
+  pname = "msgpck";
+  version = "1.7";
+
+  src = fetchFromGitHub {
+    owner = "vbmithr";
+    repo = "ocaml-msgpck";
+    rev = "${version}";
+    hash = "sha256-gBHIiicmk/5KBkKzRKyV0ymEH8dGCZG8vfE0mtpcDCM=";
+  };
+
+  propagatedBuildInputs = [ ocplib-endian ];
+
+  checkInputs = [ alcotest ];
+
+  doCheck = true;
+
+  meta = {
+    description = "Fast MessagePack (http://msgpack.org) library ";
+    license = lib.licenses.isc;
+    homepage = "https://github.com/vbmithr/ocaml-msgpck";
+    maintainers = [ lib.maintainers.ulrikstrid ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 30e461377c1d..31b4b12ba4ed 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -9877,9 +9877,13 @@ with pkgs;
 
   ldc = callPackage ../development/compilers/ldc { };
 
-  ligo = callPackage ../development/compilers/ligo {
-    coq = coq_8_14;
-    ocamlPackages = ocaml-ng.ocamlPackages_4_14_janeStreet_0_15;
+  ligo =
+    let ocaml_p = ocaml-ng.ocamlPackages_4_14_janeStreet_0_15; in
+    callPackage ../development/compilers/ligo {
+    coq = coq_8_13.override {
+      customOCamlPackages = ocaml_p;
+    };
+    ocamlPackages = ocaml_p;
   };
 
   lego = callPackage ../tools/admin/lego { };
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index fb9aa161a3e2..f7ce96f135fa 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -1162,6 +1162,8 @@ let
 
     mparser-pcre =  callPackage ../development/ocaml-modules/mparser/pcre.nix { };
 
+    msgpck = callPackage ../development/ocaml-modules/msgpck { };
+
     mrmime = callPackage ../development/ocaml-modules/mrmime { };
 
     mtime_1 =  callPackage ../development/ocaml-modules/mtime/1_x.nix { };