diff --git a/debian/control b/debian/control
index 8c2a9c4..0c5167f 100644
--- a/debian/control
+++ b/debian/control
@@ -1,23 +1,23 @@
 Source: swh-scheduler
 Maintainer: Software Heritage developers <swh-devel@inria.fr>
 Section: python
 Priority: optional
 Build-Depends: debhelper (>= 9),
                dh-python (>= 2),
                python3-all,
                python3-arrow,
                python3-celery,
                python3-click,
-               python3-elasticsearch,
+               python3-elasticsearch (>= 5.4.0),
                python3-nose,
                python3-psycopg2,
                python3-setuptools,
                python3-swh.core (>= 0.0.34),
                python3-vcversioner
 Standards-Version: 3.9.6
 Homepage: https://forge.softwareheritage.org/diffusion/DSCH/
 
 Package: python3-swh.scheduler
 Architecture: all
 Depends: python3-swh.core (>= 0.0.34), ${misc:Depends}, ${python3:Depends}
 Description: Software Heritage Scheduler
diff --git a/requirements.txt b/requirements.txt
index 2be6aa2..f889ee0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,10 +1,10 @@
 # Add here external Python modules dependencies, one per line. Module names
 # should match https://pypi.python.org/pypi names. For the full spec or
 # dependency lines, see https://pip.readthedocs.org/en/1.1/requirements.html
 
 arrow
 celery
 Click
 psycopg2
 vcversioner
-elasticsearch
+elasticsearch>5.4