diff --git a/lib/command.js b/lib/command.js
index 5ec4f76..cc61fd9 100644
--- a/lib/command.js
+++ b/lib/command.js
@@ -8,6 +8,22 @@ var exec = require('child_process').exec;
 var spawn = require('child_process').spawn;
 var utils = require('./utils');
 
+/**
+ * End event for child_process
+ *
+ * node > 0.6 use 'close'
+ * > 0.7 use 'end'
+ */
+
+var version = process.version.split('.');
+
+var cpEndEvent;
+if (0 === parseInt(version[0].replace('v',''), 10) && version[1] > 6) {
+  cpEndEvent = 'close';
+} else {
+  cpEndEvent = 'exit';
+}
+
 /**
  * Extend proto
  */
@@ -190,15 +206,15 @@ module.exports = function (proto) {
         , onErr
         , onExit
 
-      proc.stdout.addListener('data', onOut = function (data) {
+      proc.stdout.on('data', onOut = function (data) {
         stdout += data;
       });
 
-      proc.stderr.addListener('data', onErr = function (data) {
+      proc.stderr.on('data', onErr = function (data) {
         stderr += data;
       });
 
-      proc.addListener('exit', onExit = function (code, signal) {
+      proc.on(cpEndEvent, onExit = function (code, signal) {
         if (code !== 0 || signal !== null) {
           if (127 == code) stderr += '** Have you installed graphicsmagick? **\n';
           err = new Error('Command failed: ' + stderr);
diff --git a/package.json b/package.json
index 41b66bf..debba1e 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,6 @@
     , "url": "https://github.com/aheckmann/gm.git"
   }
 , "devDependencies": {
-      "should": "0.2.1"
-    , "gleak": "0.2.2"
+      "gleak": "0.2.4"
   }
 }
diff --git a/test/index.js b/test/index.js
index 4950d0e..fc82cc1 100644
--- a/test/index.js
+++ b/test/index.js
@@ -32,24 +32,22 @@ function finish (filename) {
     if (err) throw new Error(err);
 
     --pending;
-    process.stderr.write(
-        '\u001B[30m'
-      + (new Array(total - pending)).join('√')
-      + '\u001B[0m'
-      + '\u001B[30m'
-      + (new Array(pending)).join('░')
-      + '\u001B[0m'
-      + '\r'
-    );
-
+    process.stdout.write('\033[2K');
+    process.stdout.write('\033[0G');
+    process.stdout.write('pending ' + pending);
     if (pending) return;
 
+    process.stdout.write('\033[?25h');
+    process.stdout.write('\033[2K');
+    process.stdout.write('\033[0G');
     var leaks = gleak.detect();
     assert.equal(0, leaks.length, "global leaks detected: " + leaks);
-    console.error("\n\u001B[32mAll tests passed\u001B[0m")
+    console.error("\n\u001B[32mAll tests passed\u001B[0m");
   }
 }
 
+process.stdout.write('\033[?25l');
+
 files.forEach(function (file) {
   var filename = __dirname + '/' + file;
   require(filename)(test(), dir, finish(filename), gm);
diff --git a/test/inputIs.js b/test/inputIs.js
index d3a1716..37aecf7 100644
--- a/test/inputIs.js
+++ b/test/inputIs.js
@@ -1,36 +1,36 @@
 
 // gm - Copyright Aaron Heckmann <aaron.heckmann+github@gmail.com> (MIT Licensed)
 
-var should = require('should');
+var assert = require('assert')
 
 module.exports = function (_, dir, finish, gm) {
   var err;
 
   try {
     var gif = gm('/path/to/blah.gif');
-    gif.inputIs('gif').should.be.true;
-    gif.inputIs('jpg').should.be.false;
-    gif.inputIs('crazy').should.be.false;
+    assert.equal(true, gif.inputIs('gif'));
+    assert.equal(false, gif.inputIs('jpg'));
+    assert.equal(false, gif.inputIs('crazy'));
 
     var png = gm('png.png');
-    png.inputIs('png').should.be.true;
-    png.inputIs('gif').should.be.false;
-    png.inputIs('tif').should.be.false;
+    assert.equal(true, png.inputIs('png'));
+    assert.equal(false, png.inputIs('gif'));
+    assert.equal(false, png.inputIs('tif'));
 
     var jpg = gm('super/duper.jpeg');
-    jpg.inputIs('jpg').should.be.true;
-    jpg.inputIs('jpeg').should.be.true;
-    jpg.inputIs('gif').should.be.false;
-    jpg.inputIs('tif').should.be.false;
-    jpg.inputIs('gif').should.be.false;
+    assert.equal(true, jpg.inputIs('jpg'));
+    assert.equal(true, jpg.inputIs('jpeg'));
+    assert.equal(false, jpg.inputIs('gif'));
+    assert.equal(false, jpg.inputIs('tif'));
+    assert.equal(false, jpg.inputIs('gif'));
 
     var unknown = gm('super.unknown');
-    unknown.inputIs('unknown').should.be.true;
-    unknown.inputIs('.unknown').should.be.true;
-    unknown.inputIs().should.be.false;
-    unknown.inputIs('').should.be.false;
-    unknown.inputIs('png').should.be.false;
-    unknown.inputIs('pngasdf').should.be.false;
+    assert.equal(true, unknown.inputIs('unknown'));
+    assert.equal(true, unknown.inputIs('.unknown'));
+    assert.equal(false, unknown.inputIs());
+    assert.equal(false, unknown.inputIs(''));
+    assert.equal(false, unknown.inputIs('png'));
+    assert.equal(false, unknown.inputIs('pngasdf'));
   } catch (e) {
     err = e;
     console.error(e.stack);