diff --git a/default.nix b/default.nix
index 895205e..734c209 100644
--- a/default.nix
+++ b/default.nix
@@ -13,7 +13,7 @@
         openjdk17 = prev.openjdk17_headless;
       };
 
-      ocamlPackages = prev.ocamlPackages.overrideScope' (ofinal: oprev: {
+      ocamlPackages = prev.ocamlPackages.overrideScope (ofinal: oprev: {
         xlog = ofinal.callPackage ./pkgs/ocaml/xlog {};
       });
     })