Upstream commit https://github.com/crossbario/crossbar/commit/b9c295d3cfa923b383f93fe534d40e42c56576dc which has been part of the releases since v19.10.1 has added werkzeug dependency. Without werkzeug package, the test TestPythonPy3Crossbar is failing at runtime with this error: ModuleNotFoundError: No module named 'werkzeug' Fixes: https://gitlab.com/buildroot.org/buildroot/-/jobs/498144523 Signed-off-by: Romain Naour <romain.naour@gmail.com> Cc: James Hilliard <james.hilliard1@gmail.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>