diff --git a/debian/control b/debian/control
index 096f235..a300f4a 100644
--- a/debian/control
+++ b/debian/control
@@ -1,21 +1,21 @@
 Source: swh-objstorage
 Maintainer: Software Heritage developers <swh-devel@inria.fr>
 Section: python
 Priority: optional
 Build-Depends: debhelper (>= 9),
                dh-python,
                python3-all,
                python3-flask,
                python3-nose,
                python3-requests,
                python3-setuptools,
-               python3-swh.core,
+               python3-swh.core (>= 0.0.20~),
                python3-click,
                python3-vcversioner
 Standards-Version: 3.9.6
 Homepage: https://forge.softwareheritage.org/diffusion/DOBJS/
 
 Package: python3-swh.objstorage
 Architecture: all
-Depends: ${misc:Depends}, ${python3:Depends}
+Depends: python3-swh.core (>= 0.0.20~), ${misc:Depends}, ${python3:Depends}
 Description: Software Heritage Object Storage