diff --git a/debian/control b/debian/control
index c1f73d4..4280875 100644
--- a/debian/control
+++ b/debian/control
@@ -1,20 +1,21 @@
 Source: swh-core
 Maintainer: Software Heritage developers <swh-devel@inria.fr>
 Section: python
 Priority: optional
 Build-Depends: debhelper (>= 9),
                dh-python,
                python3-all,
                python3-dateutil,
                python3-msgpack,
                python3-nose,
                python3-psycopg2,
                python3-setuptools,
+               python3-yaml,
                python3-vcversioner
 Standards-Version: 3.9.6
 Homepage: https://forge.softwareheritage.org/diffusion/DCORE/
 
 Package: python3-swh.core
 Architecture: all
 Depends: ${misc:Depends}, ${python3:Depends}
 Description: Software Heritage core utilities
diff --git a/requirements.txt b/requirements.txt
index 66f2da5..5986a97 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 msgpack-python
 psycopg2
 python-dateutil
 vcversioner
+yaml