diff --git a/changelog.d/17960.bugfix b/changelog.d/17960.bugfix
new file mode 100644
index 0000000000..767085320d
--- /dev/null
+++ b/changelog.d/17960.bugfix
@@ -0,0 +1 @@
+Fix a bug introduced in Synapse v1.120rc1 which would cause the newly-introduced `delete_old_otks` job to fail in worker-mode deployments.
diff --git a/synapse/server.py b/synapse/server.py
index c7b4918813..462e15cc2f 100644
--- a/synapse/server.py
+++ b/synapse/server.py
@@ -254,6 +254,7 @@ class HomeServer(metaclass=abc.ABCMeta):
         "auth",
         "deactivate_account",
         "delayed_events",
+        "e2e_keys",  # for the `delete_old_otks` scheduled-task handler
         "message",
         "pagination",
         "profile",