diff --git a/flake.nix b/flake.nix
index f0c19e8..5266bd6 100644
--- a/flake.nix
+++ b/flake.nix
@@ -35,6 +35,7 @@
               gcc-arm-embedded-13 # replaces above packages since gcc compiles libc in arm, not thumb2
               glibc_multi
               segger-jlink
+              killall
               clang-tools
               cmake
               codespell