diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 72c54eed2e20..6ab0f3753eb1 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -1412,7 +1412,7 @@ mapAliases ({
   inherit (stdenv) buildPlatform hostPlatform targetPlatform; # Added 2023-01-09
 
   # LLVM packages for (integration) testing that should not be used inside Nixpkgs:
-  llvmPackages_latest = llvmPackages_17;
+  llvmPackages_latest = llvmPackages_18;
   llvmPackages_git = recurseIntoAttrs (callPackage ../development/compilers/llvm/git {
     inherit (stdenvAdapters) overrideCC;
     buildLlvmTools = buildPackages.llvmPackages_git.tools;