diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 92ea89a043a..597b2df2123 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -10095,7 +10095,7 @@ with pkgs;
   libb2 = callPackage ../development/libraries/libb2 { };
 
   libbap = callPackage ../development/libraries/libbap {
-    inherit (ocamlPackages) bap ocaml findlib ctypes;
+    inherit (ocaml-ng.ocamlPackages_4_05) bap ocaml findlib ctypes;
   };
 
   libbass = (callPackage ../development/libraries/audio/libbass { }).bass;