diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 63e0cf17a6f..81c8021e207 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -6356,6 +6356,7 @@ let
 
   gmp4 = callPackage ../development/libraries/gmp/4.3.2.nix { }; # required by older GHC versions
   gmp5 = callPackage ../development/libraries/gmp/5.1.x.nix { };
+  gmp6 = callPackage ../development/libraries/gmp/6.x.nix { };
   gmp = gmp5;
   gmpxx = appendToName "with-cxx" (gmp.override { cxx = true; });