diff --git a/pkgs/development/python-modules/spsdk/default.nix b/pkgs/development/python-modules/spsdk/default.nix
index ce566fb94a89..52dad183fa16 100644
--- a/pkgs/development/python-modules/spsdk/default.nix
+++ b/pkgs/development/python-modules/spsdk/default.nix
@@ -59,6 +59,8 @@ buildPythonPackage rec {
 
   nativeBuildInputs = [ pythonRelaxDepsHook ];
   pythonRelaxDeps = [
+    "bincopy"
+    "bitstring"
     "cmsis-pack-manager"
     "cryptography"
     "deepmerge"