diff --git a/pkgs/development/ocaml-modules/landmarks-ppx/default.nix b/pkgs/development/ocaml-modules/landmarks-ppx/default.nix
index dedaee7e9c5c..06923412f2f0 100644
--- a/pkgs/development/ocaml-modules/landmarks-ppx/default.nix
+++ b/pkgs/development/ocaml-modules/landmarks-ppx/default.nix
@@ -1,8 +1,5 @@
 {
-  lib,
   buildDunePackage,
-  fetchpatch,
-  ocaml,
   landmarks,
   ppxlib,
 }:
@@ -10,17 +7,14 @@
 buildDunePackage {
   pname = "landmarks-ppx";
 
-  inherit (landmarks) src version;
+  minimalOCamlVersion = "5.3";
 
-  patches = lib.optional (lib.versionAtLeast ppxlib.version "0.36") (fetchpatch {
-    url = "https://github.com/LexiFi/landmarks/commit/367c229e3275a83f81343ba116374bb68abc9d83.patch";
-    hash = "sha256-Qxue+++sNV6EHJGX1mbIeY2E2D5NuFpmIIBkTyvGvo8=";
-  });
+  inherit (landmarks) src version;
 
   buildInputs = [ ppxlib ];
   propagatedBuildInputs = [ landmarks ];
 
-  doCheck = lib.versionAtLeast ocaml.version "5.1";
+  doCheck = true;
 
   meta = landmarks.meta // {
     description = "Preprocessor instrumenting code using the landmarks library";
diff --git a/pkgs/development/ocaml-modules/landmarks/default.nix b/pkgs/development/ocaml-modules/landmarks/default.nix
index 757417c82f23..09600d6178c7 100644
--- a/pkgs/development/ocaml-modules/landmarks/default.nix
+++ b/pkgs/development/ocaml-modules/landmarks/default.nix
@@ -2,25 +2,23 @@
   lib,
   fetchFromGitHub,
   buildDunePackage,
-  ocaml,
 }:
 
 buildDunePackage (finalAttrs: {
   pname = "landmarks";
-  version = "1.5";
-  minimalOCamlVersion = "4.08";
+  version = "1.7";
 
   src = fetchFromGitHub {
     owner = "LexiFi";
     repo = "landmarks";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-eIq02D19OzDOrMDHE1Ecrgk+T6s9vj2X6B2HY+z+K8Q=";
+    hash = "sha256-9o9jf0M3zKc+Xojs4dqPRctYswSYqIo0jeOvkfdLfZ4=";
   };
 
-  doCheck = lib.versionAtLeast ocaml.version "4.08" && lib.versionOlder ocaml.version "5.0";
+  doCheck = true;
 
   meta = {
-    inherit (finalAttrs.src.meta) homepage;
+    homepage = "https://github.com/LexiFi/landmarks";
     description = "Simple Profiling Library for OCaml";
     longDescription = ''
       Landmarks is a simple profiling library for OCaml. It provides