diff --git a/pkgs/development/ocaml-modules/lambda-term/default.nix b/pkgs/development/ocaml-modules/lambda-term/default.nix
index 18fe235710f..1b5594d5565 100644
--- a/pkgs/development/ocaml-modules/lambda-term/default.nix
+++ b/pkgs/development/ocaml-modules/lambda-term/default.nix
@@ -2,20 +2,16 @@
 
 buildDunePackage rec {
   pname = "lambda-term";
-  version = "1.13";
-
-  minimumOCamlVersion = "4.02";
+  version = "2.0.2";
 
   src = fetchurl {
-    url = "https://github.com/diml/${pname}/archive/${version}.tar.gz";
-    sha256 = "1hy5ryagqclgdm9lzh1qil5mrynlypv7mn6qm858hdcnmz9zzn0l";
+    url = "https://github.com/ocaml-community/lambda-term/releases/download/${version}/lambda-term-${version}.tbz";
+    sha256 = "1p9yczrx78pf5hvhcg1qiqb2vdlmw6bmhhjsm4wiqjq2cc6piaqw";
   };
 
   buildInputs = [ libev ];
   propagatedBuildInputs = [ zed lwt_log lwt_react ];
 
-  hasSharedObjects = true;
-
   meta = { description = "Terminal manipulation library for OCaml";
     longDescription = ''
     Lambda-term is a cross-platform library for
diff --git a/pkgs/development/ocaml-modules/zed/default.nix b/pkgs/development/ocaml-modules/zed/default.nix
index d9dcf1a5385..9fa42e68c56 100644
--- a/pkgs/development/ocaml-modules/zed/default.nix
+++ b/pkgs/development/ocaml-modules/zed/default.nix
@@ -1,18 +1,20 @@
-{ stdenv, fetchzip, ocaml, findlib, ocamlbuild, camomile, react, dune }:
+{ stdenv, fetchzip, ocaml, findlib, ocamlbuild, camomile, react, dune, charInfo_width }:
 
 let param =
   if stdenv.lib.versionAtLeast ocaml.version "4.02" then
   {
-    version = "1.6";
-    sha256 = "00hhxcjf3bj3w2qm8nzs9x6vrqkadf4i0277s5whzy2rmiknj63v";
+    version = "2.0.3";
+    sha256 = "0pa9awinqr0plp4b2az78dwpvh01pwaljnn5ydg8mc6hi7rmir55";
     buildInputs = [ dune ];
+    propagatedBuildInputs = [ charInfo_width ];
     extra = {
      buildPhase = "dune build -p zed";
      inherit (dune) installPhase; };
   } else {
     version = "1.4";
     sha256 = "0d8qfy0qiydrrqi8qc9rcwgjigql6vx9gl4zp62jfz1lmjgb2a3w";
-    buildInputs = [];
+    buildInputs = [ ocamlbuild ];
+    propagatedBuildInputs = [ camomile ];
     extra = { createFindlibDestdir = true; };
   }
 ; in
@@ -26,9 +28,9 @@ stdenv.mkDerivation (rec {
     inherit (param) sha256;
   };
 
-  buildInputs = [ ocaml findlib ocamlbuild ] ++ param.buildInputs;
+  buildInputs = [ ocaml findlib ] ++ param.buildInputs;
 
-  propagatedBuildInputs = [ react camomile ];
+  propagatedBuildInputs = [ react ] ++ param.propagatedBuildInputs;
 
   meta = {
     description = "Abstract engine for text edition in OCaml";
diff --git a/pkgs/development/tools/ocaml/utop/default.nix b/pkgs/development/tools/ocaml/utop/default.nix
index d9e563952ea..161c08a7f82 100644
--- a/pkgs/development/tools/ocaml/utop/default.nix
+++ b/pkgs/development/tools/ocaml/utop/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, ocaml, findlib, ocamlbuild, dune
+{ stdenv, fetchurl, ocaml, findlib, dune
 , lambdaTerm, cppo, makeWrapper
 }:
 
@@ -7,16 +7,16 @@ then throw "utop is not available for OCaml ${ocaml.version}"
 else
 
 stdenv.mkDerivation rec {
-  version = "2.3.0";
+  version = "2.4.1";
   name = "utop-${version}";
 
   src = fetchurl {
     url = "https://github.com/diml/utop/archive/${version}.tar.gz";
-    sha256 = "1g1xf19fhzwsikp33pv1wf6wb2qdc5y7dzqi46h8c4l850cwscjh";
+    sha256 = "0kbg7sfn7jaic7xcy7dm543yzsywirxbgpiv2rzwnp9ny2510f9g";
   };
 
   nativeBuildInputs = [ makeWrapper ];
-  buildInputs = [ ocaml findlib ocamlbuild cppo dune ];
+  buildInputs = [ ocaml findlib cppo dune ];
 
   propagatedBuildInputs = [ lambdaTerm ];