diff --git a/_develop/browsers.js b/_develop/browsers.js
index 0f807cd4b7..132eef3cd6 100644
--- a/_develop/browsers.js
+++ b/_develop/browsers.js
@@ -1,17 +1,17 @@
 var desktop = {
-  'mac-chrome-latest'       : ['OS X 10.12', 'chrome', '57.0'],
-  'mac-firefox-latest'      : ['OS X 10.12', 'firefox', '52.0'],
+  'mac-chrome-latest'       : ['OS X 10.12', 'chrome', '58.0'],
+  'mac-firefox-latest'      : ['OS X 10.12', 'firefox', '53.0'],
   'mac-safari-latest'       : ['OS X 10.12', 'safari', '10.0'],
-  'mac-chrome-previous'     : ['OS X 10.11', 'chrome', '56.0'],
-  'mac-firefox-previous'    : ['OS X 10.11', 'firefox', '51.0'],
+  'mac-chrome-previous'     : ['OS X 10.11', 'chrome', '58.0'],
+  'mac-firefox-previous'    : ['OS X 10.11', 'firefox', '52.0'],
   'mac-safari-previous'     : ['OS X 10.11', 'safari', '9.0'],
 
-  'windows-chrome-latest'   : ['Windows 10', 'chrome', '57.0'],
-  'windows-firefox-latest'  : ['Windows 10', 'firefox', '52.0'],
+  'windows-chrome-latest'   : ['Windows 10', 'chrome', '58.0'],
+  'windows-firefox-latest'  : ['Windows 10', 'firefox', '53.0'],
   'windows-edge-latest'     : ['Windows 10', 'microsoftedge', '14.14393'],
   'windows-ie-latest'       : ['Windows 8.1', 'internet explorer', '11.0'],
-  'windows-chrome-previous' : ['Windows 8.1', 'chrome', '56.0'],
-  'windows-firefox-previous': ['Windows 8.1', 'firefox', '51.0'],
+  'windows-chrome-previous' : ['Windows 8.1', 'chrome', '58.0'],
+  'windows-firefox-previous': ['Windows 8.1', 'firefox', '52.0'],
   'windows-edge-previous'   : ['Windows 10', 'microsoftedge', '13.10586'],
 
   'linux-chrome-latest'     : ['Linux', 'chrome', '48.0'],
@@ -21,7 +21,7 @@ var desktop = {
 };
 
 var mobile = {
-  'ios-latest'        : ['iPhone 7 Plus', 'iOS', '10.0', 'Safari'],
+  'ios-latest'        : ['iPhone 7 Plus', 'iOS', '10.3', 'Safari'],
   'ios-previous'      : ['iPhone 6 Plus', 'iOS', '9.3', 'Safari'],
 
   'android-latest'    : ['Android Emulator', 'Android', '6.0', 'Browser'],
@@ -41,7 +41,7 @@ Object.keys(mobile).forEach(function(key) {
   module.exports[key] = {
     base: 'SauceLabs',
     browserName: mobile[key][3],
-    appiumVersion: '1.6.3',
+    appiumVersion: '1.6.4',
     deviceName: mobile[key][0],
     deviceOrientation: 'portrait',
     platformVersion: mobile[key][2],