diff --git a/pkgs/development/compilers/ghc/9.4.2.nix b/pkgs/development/compilers/ghc/9.4.3.nix
similarity index 99%
rename from pkgs/development/compilers/ghc/9.4.2.nix
rename to pkgs/development/compilers/ghc/9.4.3.nix
index a3eb18e15687..2b0f206a6fb0 100644
--- a/pkgs/development/compilers/ghc/9.4.2.nix
+++ b/pkgs/development/compilers/ghc/9.4.3.nix
@@ -176,12 +176,12 @@ assert buildTargetLlvmPackages.llvm == llvmPackages.llvm;
 assert stdenv.targetPlatform.isDarwin -> buildTargetLlvmPackages.clang == llvmPackages.clang;
 
 stdenv.mkDerivation (rec {
-  version = "9.4.2";
+  version = "9.4.3";
   pname = "${targetPrefix}ghc${variantSuffix}";
 
   src = fetchurl {
     url = "https://downloads.haskell.org/ghc/${version}/ghc-${version}-src.tar.xz";
-    sha256 = "7227ef3b5e15a0d70b8f1a43aec32867e2a9b2d857cc0ed556aeed172d4db3a5";
+    sha256 = "eaf63949536ede50ee39179f2299d5094eb9152d87cc6fb2175006bc98e8905a";
   };
 
   enableParallelBuilding = true;
diff --git a/pkgs/development/compilers/ghc/common-hadrian.nix b/pkgs/development/compilers/ghc/common-hadrian.nix
index 5e1600a73f9b..1ca3c9efde94 100644
--- a/pkgs/development/compilers/ghc/common-hadrian.nix
+++ b/pkgs/development/compilers/ghc/common-hadrian.nix
@@ -158,7 +158,7 @@ assert !enableNativeBignum -> gmp != null;
 
 assert stdenv.hostPlatform == stdenv.targetPlatform || throw ''
   hadrian doesn't support building an installable GHC cross-compiler at the moment.
-  Consider using GHC 9.4.2 or lower which support this via the make build system.
+  Consider using GHC 9.4 or lower which support this via the make build system.
   See also: https://gitlab.haskell.org/ghc/ghc/-/issues/22090
 '';
 
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 44ffc7335c34..16d4d4a76cac 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -18,7 +18,7 @@ let
     "ghc90"
     "ghc924"
     "ghc92"
-    "ghc942"
+    "ghc943"
     "ghc94"
     "ghcHEAD"
   ];
@@ -29,7 +29,7 @@ let
     "ghc92"
     "ghc924"
     "ghc94"
-    "ghc942"
+    "ghc943"
     "ghcHEAD"
   ];
 
@@ -165,7 +165,7 @@ in {
       llvmPackages = pkgs.llvmPackages_12;
     };
     ghc92 = ghc924;
-    ghc942 = callPackage ../development/compilers/ghc/9.4.2.nix {
+    ghc943 = callPackage ../development/compilers/ghc/9.4.3.nix {
       bootPkgs =
         # Building with 9.2 is broken due to
         # https://gitlab.haskell.org/ghc/ghc/-/issues/21914
@@ -189,7 +189,7 @@ in {
       buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_12;
       llvmPackages = pkgs.llvmPackages_12;
     };
-    ghc94 = ghc942;
+    ghc94 = ghc943;
     ghcHEAD = callPackage ../development/compilers/ghc/head.nix {
       bootPkgs =
         # For GHC 9.2.3 and 9.2.4 no armv7l bindists are available.
@@ -311,12 +311,12 @@ in {
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-9.2.x.nix { };
     };
     ghc92 = ghc924;
-    ghc942 = callPackage ../development/haskell-modules {
-      buildHaskellPackages = bh.packages.ghc942;
-      ghc = bh.compiler.ghc942;
+    ghc943 = callPackage ../development/haskell-modules {
+      buildHaskellPackages = bh.packages.ghc943;
+      ghc = bh.compiler.ghc943;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-9.4.x.nix { };
     };
-    ghc94= ghc942;
+    ghc94 = ghc943;
     ghcHEAD = callPackage ../development/haskell-modules {
       buildHaskellPackages = bh.packages.ghcHEAD;
       ghc = bh.compiler.ghcHEAD;
diff --git a/pkgs/top-level/release-haskell.nix b/pkgs/top-level/release-haskell.nix
index baa93c2bff76..53e9c4219ab8 100644
--- a/pkgs/top-level/release-haskell.nix
+++ b/pkgs/top-level/release-haskell.nix
@@ -53,7 +53,7 @@ let
     ghc8107
     ghc902
     ghc924
-    ghc942
+    ghc943
   ];
 
   # packagePlatforms applied to `haskell.packages.*`