diff --git a/pkgs/development/ocaml-modules/stringext/default.nix b/pkgs/development/ocaml-modules/stringext/default.nix
index 8aaf36baa8b..3d440cf4895 100644
--- a/pkgs/development/ocaml-modules/stringext/default.nix
+++ b/pkgs/development/ocaml-modules/stringext/default.nix
@@ -1,6 +1,6 @@
 { lib, fetchurl, ocaml, buildDunePackage, ounit, qtest
 # Optionally enable tests; test script use OCaml-4.01+ features
-, doCheck ? lib.versionAtLeast ocaml.version "4.04"
+, doCheck ? lib.versionAtLeast ocaml.version "4.08"
 }:
 
 let version = "1.6.0"; in