diff --git a/pkgs/development/ocaml-modules/fileutils/default.nix b/pkgs/development/ocaml-modules/fileutils/default.nix
index f186f15d6b2d..3cca0f46bd6c 100644
--- a/pkgs/development/ocaml-modules/fileutils/default.nix
+++ b/pkgs/development/ocaml-modules/fileutils/default.nix
@@ -17,7 +17,7 @@ buildDunePackage rec {
     hash = "sha256-eW1XkeK/ezv/IAz1BXp6GHhDnrzXTtDxCIz4Z1bVK+Y=";
   };
 
-  minimalOCamlVersion = "4.03";
+  minimalOCamlVersion = "4.14";
 
   propagatedBuildInputs = [
     seq