diff --git a/shell.nix b/shell.nix
index 0c7624a..2eaf1cd 100644
--- a/shell.nix
+++ b/shell.nix
@@ -6,7 +6,7 @@ pkgs.haskellPackages.developPackage {
   withHoogle = true;
   modifier = drv:
   pkgs.haskell.lib.addBuildTools drv (
-    (with pkgs; [ hlint haskell-language-server ghc jasmin ])
+    (with pkgs; [ hlint haskell-language-server ghc jasmin llvmPackages_15.libllvm])
     ++
     (with pkgs.haskellPackages; [ 
       cabal-install