diff --git a/doc/languages-frameworks/haskell.section.md b/doc/languages-frameworks/haskell.section.md
index b0b5f5c3bb2f..c6e5ae5af0e2 100644
--- a/doc/languages-frameworks/haskell.section.md
+++ b/doc/languages-frameworks/haskell.section.md
@@ -110,7 +110,7 @@ Each of those compiler versions has a corresponding attribute set built using
 it. However, the non-standard package sets are not tested regularly and, as a
 result, contain fewer working packages. The corresponding package set for GHC
 9.4.5 is `haskell.packages.ghc945`. In fact `haskellPackages` is just an alias
-for `haskell.packages.ghc927`:
+for `haskell.packages.ghc963`:
 
 ```console
 $ nix-env -f '<nixpkgs>' -qaP -A haskell.packages.ghc927
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 8ab7f9f663dd..6c178e53d1ef 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -16235,13 +16235,11 @@ with pkgs;
   haskell = callPackage ./haskell-packages.nix { };
 
   haskellPackages = dontRecurseIntoAttrs
-    # JS backend is only available for GHC >= 9.6
-    (if stdenv.hostPlatform.isGhcjs
-     then haskell.packages.native-bignum.ghc96
-     # Prefer native-bignum to avoid linking issues with gmp
-     else if stdenv.hostPlatform.isStatic
-     then haskell.packages.native-bignum.ghc94
-     else haskell.packages.ghc94)
+    # Prefer native-bignum to avoid linking issues with gmp
+    # JS backend can't use gmp
+    (if stdenv.hostPlatform.isStatic || stdenv.hostPlatform.isGhcjs
+    then haskell.packages.native-bignum.ghc96
+    else haskell.packages.ghc96)
   // { __recurseIntoDerivationForReleaseJobs = true; };
 
   # haskellPackages.ghc is build->host (it exposes the compiler used to build the
@@ -16254,9 +16252,10 @@ with pkgs;
   # plain, cross-compiled compiler (which is only theoretical at the moment).
   ghc = targetPackages.haskellPackages.ghc or
     # Prefer native-bignum to avoid linking issues with gmp
-    (if stdenv.targetPlatform.isStatic
-       then haskell.compiler.native-bignum.ghc94
-       else haskell.compiler.ghc94);
+    # JS backend can't use GMP
+    (if stdenv.targetPlatform.isStatic || stdenv.targetPlatform.isGhcjs
+       then haskell.compiler.native-bignum.ghc96
+       else haskell.compiler.ghc96);
 
   alex = haskell.lib.compose.justStaticExecutables haskellPackages.alex;
 
@@ -20723,8 +20722,7 @@ with pkgs;
   c-blosc = callPackage ../development/libraries/c-blosc { };
 
   # justStaticExecutables is needed due to https://github.com/NixOS/nix/issues/2990
-  # ghc94: https://discourse.haskell.org/t/facing-mmap-4096-bytes-at-nil-cannot-allocate-memory-youre-not-alone/6259
-  cachix = haskell.lib.justStaticExecutables haskell.packages.ghc94.cachix;
+  cachix = haskell.lib.compose.justStaticExecutables haskellPackages.cachix;
 
   calcium = callPackage ../development/libraries/calcium { };