diff --git a/roles/matrix-bridge-mautrix-signal/templates/systemd/matrix-mautrix-signal-daemon.service.j2 b/roles/matrix-bridge-mautrix-signal/templates/systemd/matrix-mautrix-signal-daemon.service.j2
index 0ee05d7d7..4ee878805 100644
--- a/roles/matrix-bridge-mautrix-signal/templates/systemd/matrix-mautrix-signal-daemon.service.j2
+++ b/roles/matrix-bridge-mautrix-signal/templates/systemd/matrix-mautrix-signal-daemon.service.j2
@@ -24,6 +24,7 @@ ExecStartPre={{ matrix_host_command_sleep }} 5
 # We can't use `--read-only` for this bridge.
 ExecStart={{ matrix_host_command_docker }} run --rm --name matrix-mautrix-signal-daemon \
 			--log-driver=none \
+			--env SIGNALD_TRUST_NEW_KEYS=true \
 			--user={{ matrix_user_uid }}:{{ matrix_user_gid }} \
 			--cap-drop=ALL \
 			--network={{ matrix_docker_network }} \