diff --git a/packages/k4rectracker/package.py b/packages/k4rectracker/package.py
index fe6e95bc..aaa79e68 100644
--- a/packages/k4rectracker/package.py
+++ b/packages/k4rectracker/package.py
@@ -1,6 +1,7 @@
 from spack.pkg.k4.key4hep_stack import Ilcsoftpackage
 from spack.pkg.k4.key4hep_stack import k4_setup_env_for_framework_tests
 
+
 class K4rectracker(CMakePackage, Ilcsoftpackage):
     """Tracking detectors (and similar) digitization and reconstruction using Gaudi in native key4hep"""