diff --git a/test/tests.js b/test/tests.js
index 54b9222..49628c5 100644
--- a/test/tests.js
+++ b/test/tests.js
@@ -108,7 +108,7 @@ var text1 = fs.readFileSync(__dirname + '/text1.txt', 'utf-8'),
 
 exports['Async'] = {
   'no progress callback': function(done) {
-    this.timeout(20000);
+    this.timeout(40000);
 
     var startTime = new Date().valueOf();
 
@@ -124,7 +124,7 @@ exports['Async'] = {
     });
   },
   'with progress callback': function(done) {
-    this.timeout(20000);
+    this.timeout(40000);
 
     var percents = [];
     var progress = function(percent) {