diff --git a/flake.nix b/flake.nix
index ace79eb..41410ef 100644
--- a/flake.nix
+++ b/flake.nix
@@ -63,7 +63,7 @@
         name = "thermostat-dev-shell";
         packages = with pkgs; [
           rust llvm
-          openocd dfu-util
+          openocd dfu-util rlwrap
           ] ++ (with python3Packages; [
             numpy matplotlib
           ]);