diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 096f0a1b3f6..b380653ae5e 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -9611,8 +9611,8 @@ let
   };
 
   monotoneViz = builderDefsPackage (import ../applications/version-management/monotone-viz/mtn-head.nix) {
-    inherit ocaml graphviz pkgconfig autoconf automake libtool glib gtk;
-    inherit (ocamlPackages) lablgtk;
+    inherit graphviz pkgconfig autoconf automake libtool glib gtk;
+    inherit (ocamlPackages_4_01_0) lablgtk ocaml;
     inherit (gnome) libgnomecanvas;
   };