diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index b31932759c85..1a5bcf2fbb04 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -1981,7 +1981,7 @@ in let inherit (pkgs) callPackage; in rec
 
   ocamlPackages_latest = ocamlPackages_5_1;
 
-  ocamlPackages = ocamlPackages_4_14;
+  ocamlPackages = ocamlPackages_5_1;
 
   # This is a nasty way to replace toplevel janestreet attributes in the scope,
   # so that modules outside of ocamlPackages that depend on JS OCaml libraries