diff --git a/docker/etc/s6-overlay/s6-rc.d/04-nqptp/run b/docker/etc/s6-overlay/s6-rc.d/04-nqptp/run
index 27a489b8..0d41862f 100644
--- a/docker/etc/s6-overlay/s6-rc.d/04-nqptp/run
+++ b/docker/etc/s6-overlay/s6-rc.d/04-nqptp/run
@@ -1,3 +1,3 @@
 #!/command/with-contenv sh
 echo "Starting nqptp"
-exec /usr/local/bin/nqptp
+exec /usr/local/bin/nqptp -ipv4-only