diff --git a/pkgs/development/ocaml-modules/landmarks-ppx/default.nix b/pkgs/development/ocaml-modules/landmarks-ppx/default.nix
index 724d8c10c73e..4d70169e2c4f 100644
--- a/pkgs/development/ocaml-modules/landmarks-ppx/default.nix
+++ b/pkgs/development/ocaml-modules/landmarks-ppx/default.nix
@@ -8,14 +8,13 @@
 
 buildDunePackage {
   pname = "landmarks-ppx";
-  minimalOCamlVersion = "4.08";
 
   inherit (landmarks) src version;
 
   buildInputs = [ ppxlib ];
   propagatedBuildInputs = [ landmarks ];
 
-  doCheck = lib.versionAtLeast ocaml.version "4.08" && lib.versionOlder ocaml.version "5.0";
+  doCheck = lib.versionAtLeast ocaml.version "5.1";
 
   meta = landmarks.meta // {
     description = "Preprocessor instrumenting code using the landmarks library";