diff --git a/pkgs/development/ocaml-modules/lambdapi/default.nix b/pkgs/development/ocaml-modules/lambdapi/default.nix
index 9e6de8a37e8c..5dec72fd8101 100644
--- a/pkgs/development/ocaml-modules/lambdapi/default.nix
+++ b/pkgs/development/ocaml-modules/lambdapi/default.nix
@@ -4,7 +4,6 @@
   buildDunePackage,
   alcotest,
   dedukti,
-  bindlib,
   camlp-streams,
   cmdliner,
   dream,
@@ -20,13 +19,13 @@
 
 buildDunePackage rec {
   pname = "lambdapi";
-  version = "2.6.0";
+  version = "3.0.0";
 
-  minimalOCamlVersion = "4.12";
+  minimalOCamlVersion = "4.14";
 
   src = fetchurl {
     url = "https://github.com/Deducteam/lambdapi/releases/download/${version}/lambdapi-${version}.tbz";
-    hash = "sha256-0B5fE9suq6bk/jMGZxSeAFnUiGxlH/nWtnLbLfyXZe0=";
+    hash = "sha256-EGau0mGP2OakAMUUfb9V6pd86NP+LlGKxnhcZ3WhuL4=";
   };
 
   nativeBuildInputs = [
@@ -35,7 +34,6 @@ buildDunePackage rec {
   ];
   buildInputs = [ lwt_ppx ];
   propagatedBuildInputs = [
-    bindlib
     camlp-streams
     cmdliner
     dream
diff --git a/pkgs/development/ocaml-modules/pratter/default.nix b/pkgs/development/ocaml-modules/pratter/default.nix
index 9c680b3ce742..375ab1d4ed31 100644
--- a/pkgs/development/ocaml-modules/pratter/default.nix
+++ b/pkgs/development/ocaml-modules/pratter/default.nix
@@ -2,28 +2,25 @@
   lib,
   fetchFromGitLab,
   buildDunePackage,
-  camlp-streams,
   alcotest,
   qcheck,
   qcheck-alcotest,
 }:
 
 buildDunePackage rec {
-  version = "3.0.0";
+  version = "5.0.1";
   pname = "pratter";
 
-  minimalOCamlVersion = "4.08";
+  minimalOCamlVersion = "4.10";
 
   src = fetchFromGitLab {
     domain = "forge.tedomum.net";
     owner = "koizel";
     repo = "pratter";
     tag = version;
-    hash = "sha256-O9loVYPJ9xoYf221vBbclqNNq2AA3ImUFGHxtfK3Jwc=";
+    hash = "sha256-Ib7EplEvOuYcAS9cfzo5994SqCv2eiysLekYfH09IMw=";
   };
 
-  propagatedBuildInputs = [ camlp-streams ];
-
   checkInputs = [
     alcotest
     qcheck