diff --git a/lib/index.js b/lib/index.js
index 893c57b..a2da45f 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -118,7 +118,7 @@ exports.lookup = function (query, callback) {
   /**
    * add 'lx' as default ps arguments, since the default ps output in linux like "ubuntu", wont include command arguments
    */
-  var exeArgs = query.psargs || ['lx'];
+  var exeArgs = query.psargs || 'x -o ppid,pid,command';
   var filter = {};
   var idList;
 
diff --git a/package.json b/package.json
index d0ec26a..12e8d5b 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "pid"
   ],
   "dependencies": {
-    "table-parser": "^0.1.3"
+    "table-parser": "^1.0.1"
   },
   "license": "MIT",
   "devDependencies": {