diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index bf1cd6aa18856..8adbe76832d10 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -87,11 +87,11 @@ in
       };
 
       ghc8107Binary = callPackage ../development/compilers/ghc/8.10.7-binary.nix {
-        llvmPackages = pkgs.llvmPackages_12;
+        llvmPackages = pkgs.llvmPackages_13;
       };
 
       ghc924Binary = callPackage ../development/compilers/ghc/9.2.4-binary.nix {
-        llvmPackages = pkgs.llvmPackages_12;
+        llvmPackages = pkgs.llvmPackages_15;
       };
 
       ghc963Binary = callPackage ../development/compilers/ghc/9.6.3-binary.nix {
@@ -112,8 +112,8 @@ in
         # https://github.com/xattr/xattr/issues/44 and
         # https://github.com/xattr/xattr/issues/55 are solved.
         inherit (buildPackages.darwin) xattr autoSignDarwinBinariesHook;
-        buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_12;
-        llvmPackages = pkgs.llvmPackages_12;
+        buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_15;
+        llvmPackages = pkgs.llvmPackages_15;
       };
       ghc810 = compiler.ghc8107;
       ghc902 = callPackage ../development/compilers/ghc/9.0.2.nix {
@@ -126,8 +126,8 @@ in
         inherit (buildPackages.python311Packages) sphinx; # a distutils issue with 3.12
         python3 = buildPackages.python311; # so that we don't have two of them
         inherit (buildPackages.darwin) autoSignDarwinBinariesHook xattr;
-        buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_12;
-        llvmPackages = pkgs.llvmPackages_12;
+        buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_15;
+        llvmPackages = pkgs.llvmPackages_15;
       };
       ghc90 = compiler.ghc902;
       ghc925 = callPackage ../development/compilers/ghc/9.2.5.nix {
@@ -142,8 +142,8 @@ in
         # https://github.com/xattr/xattr/issues/44 and
         # https://github.com/xattr/xattr/issues/55 are solved.
         inherit (buildPackages.darwin) xattr autoSignDarwinBinariesHook;
-        buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_12;
-        llvmPackages = pkgs.llvmPackages_12;
+        buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_15;
+        llvmPackages = pkgs.llvmPackages_15;
       };
       ghc926 = callPackage ../development/compilers/ghc/9.2.6.nix {
         bootPkgs =
@@ -157,8 +157,8 @@ in
         # https://github.com/xattr/xattr/issues/44 and
         # https://github.com/xattr/xattr/issues/55 are solved.
         inherit (buildPackages.darwin) xattr autoSignDarwinBinariesHook;
-        buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_12;
-        llvmPackages = pkgs.llvmPackages_12;
+        buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_15;
+        llvmPackages = pkgs.llvmPackages_15;
       };
       ghc927 = callPackage ../development/compilers/ghc/9.2.7.nix {
         bootPkgs =
@@ -172,8 +172,8 @@ in
         # https://github.com/xattr/xattr/issues/44 and
         # https://github.com/xattr/xattr/issues/55 are solved.
         inherit (buildPackages.darwin) xattr autoSignDarwinBinariesHook;
-        buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_12;
-        llvmPackages = pkgs.llvmPackages_12;
+        buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_15;
+        llvmPackages = pkgs.llvmPackages_15;
       };
       ghc928 = callPackage ../development/compilers/ghc/9.2.8.nix {
         bootPkgs =
@@ -187,8 +187,8 @@ in
         # https://github.com/xattr/xattr/issues/44 and
         # https://github.com/xattr/xattr/issues/55 are solved.
         inherit (buildPackages.darwin) xattr autoSignDarwinBinariesHook;
-        buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_12;
-        llvmPackages = pkgs.llvmPackages_12;
+        buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_15;
+        llvmPackages = pkgs.llvmPackages_15;
       };
       ghc92 = compiler.ghc928;
       ghc947 = callPackage ../development/compilers/ghc/9.4.7.nix {
@@ -212,8 +212,8 @@ in
         # https://github.com/xattr/xattr/issues/55 are solved.
         inherit (buildPackages.darwin) xattr autoSignDarwinBinariesHook;
         # Support range >= 10 && < 14
-        buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_12;
-        llvmPackages = pkgs.llvmPackages_12;
+        buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_15;
+        llvmPackages = pkgs.llvmPackages_15;
       };
       ghc948 = callPackage ../development/compilers/ghc/9.4.8.nix {
         bootPkgs =
@@ -236,8 +236,8 @@ in
         # https://github.com/xattr/xattr/issues/55 are solved.
         inherit (buildPackages.darwin) xattr autoSignDarwinBinariesHook;
         # Support range >= 10 && < 14
-        buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_12;
-        llvmPackages = pkgs.llvmPackages_12;
+        buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_15;
+        llvmPackages = pkgs.llvmPackages_15;
       };
       ghc94 = compiler.ghc948;
       ghc963 = callPackage ../development/compilers/ghc/9.6.3.nix {