diff --git a/debian/control b/debian/control
index cfe5bfb..ca6f561 100644
--- a/debian/control
+++ b/debian/control
@@ -1,26 +1,27 @@
 Source: swh-core
 Maintainer: Software Heritage developers <swh-devel@inria.fr>
 Section: python
 Priority: optional
 Build-Depends: debhelper (>= 9),
                dh-python (>= 2),
                python3-all,
                python3-aiohttp,
                python3-arrow,
                python3-flask,
                python3-requests,
                python3-dateutil,
                python3-msgpack,
                python3-nose,
                python3-psycopg2,
+               python3-requests-mock,
                python3-setuptools,
                python3-systemd,
                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}, python3-systemd
 Description: Software Heritage core utilities