diff --git a/flake.nix b/flake.nix
index c3344f4..8bea1d5 100644
--- a/flake.nix
+++ b/flake.nix
@@ -61,7 +61,8 @@
       devShells.x86_64-linux.default = pkgs.mkShellNoCC {
         name = "thermostat-dev-shell";
         packages = with pkgs; [
-          rust openocd dfu-util
+          rust llvm
+          openocd dfu-util
           ] ++ (with python3Packages; [
             numpy matplotlib
           ]);