diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 0dd58a0a69c2..d5de9fcf6c8d 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -32441,7 +32441,7 @@ with pkgs;
 
   hol = callPackage ../applications/science/logic/hol { };
 
-  inherit (ocamlPackages) hol_light;
+  inherit (ocaml-ng.ocamlPackages_4_12) hol_light;
 
   hologram = callPackage ../tools/security/hologram { };