diff --git a/requirements-swh.txt b/requirements-swh.txt
--- a/requirements-swh.txt
+++ b/requirements-swh.txt
@@ -1,2 +1,2 @@
-swh.core[db,http] >= 2
+swh.core[db,http] >= 2.9
 swh.storage >= 0.11.1
diff --git a/swh/scheduler/backend.py b/swh/scheduler/backend.py
--- a/swh/scheduler/backend.py
+++ b/swh/scheduler/backend.py
@@ -73,9 +73,6 @@
             )
             self._db = None
 
-    def get_current_version(self):
-        return self.current_version
-
     def get_db(self):
         if self._db:
             return self._db