diff --git a/flake.nix b/flake.nix
index 803e774..f48fb3b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -67,7 +67,8 @@
       devShell.x86_64-linux = pkgs.mkShell {
         name = "thermostat-dev-shell";
         buildInputs = with pkgs; [
-          rust openocd dfu-util
+          rust llvm
+          openocd dfu-util
           ] ++ (with python3Packages; [
             numpy matplotlib
           ]);