diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 1b4de23189a9..598c07f93ad0 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7068,7 +7068,7 @@ in
 
   haskell = callPackage ./haskell-packages.nix { };
 
-  haskellPackages = dontRecurseIntoAttrs (haskell.packages.ghc863.override {
+  haskellPackages = dontRecurseIntoAttrs (haskell.packages.ghc864.override {
     overrides = config.haskellPackageOverrides or haskell.packageOverrides;
   });