diff --git a/debian/control b/debian/control
index 9913620..5006ca9 100644
--- a/debian/control
+++ b/debian/control
@@ -1,29 +1,30 @@
 Source: swh-loader-cvs
 Maintainer: Software Heritage developers <swh-devel@inria.fr>
 Section: python
 Priority: optional
 Build-Depends:
  debhelper-compat (= 13),
  dh-python (>= 3),
  python3-all,
  python3-pytest,
+ python3-pytest-mock,
  python3-setuptools,
  python3-setuptools-scm,
  python3-swh.core (>= 0.3),
  python3-swh.loader.core (>= 0.18),
  python3-swh.model (>= 0.4.0),
  python3-swh.scheduler (>= 0.0.39),
  python3-swh.storage (>= 0.11.3),
 # The above dependencies are automatically generated. Add extra dependencies below:
  cvs,
  python3-swh.core.db.pytestplugin,
  python3-all-dev,
 Rules-Requires-Root: no
 Standards-Version: 4.6.0
 Homepage: https://forge.softwareheritage.org/source/swh-loader-cvs
 
 Package: python3-swh.loader.cvs
 Architecture: any
 Depends: ${misc:Depends}, ${python3:Depends},
  ${shlibs:Depends},
 Description: Software Heritage CVS Loader