diff --git a/javascript/atoms/test/history_test.html b/javascript/atoms/test/history_test.html
index d88033807cc6d..c6eee71ba5253 100644
--- a/javascript/atoms/test/history_test.html
+++ b/javascript/atoms/test/history_test.html
@@ -66,7 +66,7 @@
   }
 
   function setUpPage() {
-    goog.testing.TestCase.getActiveTestCase().promiseTimeout = 10000; // 10s
+    goog.testing.TestCase.getActiveTestCase().promiseTimeout = 30000; // 30s
   }
 
   function setUp() {
diff --git a/javascript/atoms/test/inject_test.html b/javascript/atoms/test/inject_test.html
index 9d2fddb9afb5f..7fdc09098a66b 100644
--- a/javascript/atoms/test/inject_test.html
+++ b/javascript/atoms/test/inject_test.html
@@ -44,6 +44,10 @@
 
     var frame, frameWin, frameDoc;
 
+    function setUpPage() {
+      goog.testing.TestCase.getActiveTestCase().promiseTimeout = 30000; // 30s
+    }
+
     function setUp() {
       frame = goog.dom.$('test-frame');
       frameWin = goog.dom.getFrameContentWindow(frame);
diff --git a/javascript/atoms/test/mouse_test.html b/javascript/atoms/test/mouse_test.html
index 89b30b85be065..b8c8a957a2f38 100644
--- a/javascript/atoms/test/mouse_test.html
+++ b/javascript/atoms/test/mouse_test.html
@@ -60,6 +60,7 @@
     redDiv = bot.locators.findElement({id: 'red'});
     captureDiv = bot.locators.findElement({id: 'capture'});
     innerCaptureDiv = bot.locators.findElement({id: 'innerCapture'});
+    goog.testing.TestCase.getActiveTestCase().promiseTimeout = 30000; // 30s
   }
 
   function setUp() {