diff --git a/pkgs/development/ocaml-modules/curly/default.nix b/pkgs/development/ocaml-modules/curly/default.nix
index b67baecfce75..03918c0d4829 100644
--- a/pkgs/development/ocaml-modules/curly/default.nix
+++ b/pkgs/development/ocaml-modules/curly/default.nix
@@ -6,7 +6,7 @@ buildDunePackage rec {
   pname = "curly";
   version = "0.3.0";
 
-  minimalOCamlVersion = "4.02";
+  minimalOCamlVersion = "4.03";
 
   duneVersion = "3";