diff --git a/third_party/default.nix b/third_party/default.nix
index aca3430c9..79a92d84d 100644
--- a/third_party/default.nix
+++ b/third_party/default.nix
@@ -73,7 +73,6 @@ let
       kontemplate
       lib
       libredirect
-      llvmPackages
       luajit
       luatex
       makeFontsConf
@@ -166,6 +165,9 @@ in exposed // {
     ffmpeg = nixpkgs.ffmpeg-full;
   };
 
+  # Use LLVM 10
+  llvmPackages = nixpkgs.llvmPackages_10;
+
   # Make NixOS available
   nixos = import "${stableNixpkgsSrc}/nixos";
 }