diff --git a/server.js b/server.js
index b5ba2ec..b870808 100644
--- a/server.js
+++ b/server.js
@@ -8,7 +8,8 @@ const docker = new Docker({ socketPath: '/var/run/docker.sock' })
 async function getServiceStatusCode(service_name) {
   try {
     const service = docker.getService(service_name)
-    const tasks = await service.tasks({ filters: { service: [service_name] } })
+    await service.inspect()
+    const tasks = await docker.listTasks({ filters: { service: [service_name] } })
 
     if (tasks.length === 0) {
       return 503