This fixes the build [1s [1] [2]
Note that i don't see that dependency packaged in debian so at some point, some work will be needed for it ;)
[1] https://jenkins.softwareheritage.org/job/DTSCN/job/tests/297/console
[2] https://jenkins.softwareheritage.org/job/DENV/job/tests/lastBuild/console